Hong Kong mask ban leads to weekend of violent and destructive protests

Editor’s Note: This story was originally shared with an image from another news event, and has since been updated.

Hong Kong is entering its fourth day of unprecedented subway closures after a weekend of destructive protests in the wake of new emergency legislation left the city reeling.

Anti-government protesters rampaged throughout parts of Kowloon and Hong Kong Island Sunday, targeting subway stations and Chinese-linked businesses, many of which had shut in advance but were nevertheless attacked and vandalized, with police struggling to keep up.

A small number of protesters also targeted a People’s Liberation Army (PLA) barracks in the area, causing police to hold up signs warning them to disperse, a concerning escalation against the Chinese military which has largely kept a back seat during four months of anti-government protests.

The unrest took another dark turn when a driver mowed down protesters with a taxi cab was subsequently beaten bloody by a mob, video shows. Thousands had taken to the streets Sunday to participate in two marches against a recent measure banning people from wearing face masks at public gatherings.

The law, enacted by Chief Executive Carrie Lam using colonial-era emergency powers, has stoked a swift backlash among protesters and worries about a crackdown on civil liberties.

Rescue personnel check underneath a taxi after it hit two protesters along Cheung Sha Wan Road in Hong Kong on Sunday.

Pro-democracy protesters set a barricade on fire in Causeway Bay district, Hong Kong, on Sunday.

The incident involving the taxi cab was one of the most violent the city has seen during the protest movement, which began peacefully but has seen protesters increasingly use violence and vandalism. The unrest is now entering its 18th week.

Video uploaded to social media shows one of Hong Kong’s red taxi cabs, driving slowly in a sea of black-clad protesters, turning left and accelerating into the crowd.

Several other images and video in local media show what appeared to be the aftermath: A man, bloodied and battered, being hit and kicked while on the ground next to the taxi. In one of the videos, a few people could be seen attempting to intervene to help him and stop the mob from further harming him. A police source told CNN the driver was unconscious when he was rescued.

CNN could not immediately confirm the circumstances that led to this incident.

The Hong Kong Hospital Authority said four people were sent to the hospital in the aftermath. One has left and three are in serious condition, including the taxi driver, the hospital authority said.

Hong Kong Police and the city’s fire department said they were not commenting on the footage when asked by CNN.

A protester throws back a teargas cannister towards police in the Wanchai district in Hong Kong on Sunday.

Sunday’s public assemblies were not authorized by the government, and police used tear gas and pepper spray to disperse those who participated. Several were arrested. Some protesters were seen throwing bricks and Molotov cocktails and setting fires in the street.

Hong Kong has been rocked by violent clashes and the city has been partially paralyzed since the Friday evening decision by the government to use its emergency powers to ban people from wearing masks at demonstrations. Lam said the move was “necessary” but insisted it does not mean Hong Kong is in a state of emergency.

Lam’s political opponents said the law was unconstitutional and worried it could portend more emergency measures, which give her effective carte blanche to make new laws as necessary in the instance of a severe breakdown of public order. However, the emergency laws have not been tested in court since Hong Kong’s return to China in 1997 and could be found unconstitutional.

On Sunday, a High Court judge rejected an attempt by pro-democracy lawmakers to repeal the emergency law. A hearing for a judicial review of the implementation of the city’s emergency measures was scheduled for October 20.

Lam’s decision, regardless of its legality, sparked furor among protesters. Since enacting they measure, they have vandalized multiple train stations, set fire to entrances and smashed ticketing facilities. Numerous mainland Chinese-owned banks and stores have also been targeted, as have businesses that expressed sympathy to mainland China. The law does not appear to have deterred people from wearing masks, as many were seen using them during the weekend’s demonstrations.

Protesters vandalize the Cheung Sha Wan local government offices in Hong Kong on Sunday.

The vast majority of people who have attended the city’s recent pro-democracy demonstrations do so wearing masks to hide their identity because they fear being arrested, targeted by police or that their employers will find out and punish them for participation. Gas masks and respirators used to protect against tear gas, which is often used by authorities to disperse unauthorized gatherings, have also become commonplace.

Lam called the vandalism on Friday night and early Saturday morning “unprecedented” and said “the extreme acts by rioters wearing masks is appalling.”

“We can no longer tolerate rioters destroying the Hong Kong we cherished,” she said.

On Saturday, Hong Kong’s Mass Transit Railway (MTR) network suspended all of its operations for the first time during the political crisis, which is now entering its 18th week. The MTR opened on a limited basis Sunday.

A riot policeman sprays pepper spray at a man as they disperse a crowd during a demonstration against "parallel traders" who buy goods in Hong Kong to resell in mainland China on Sunday, January 5.

Pro-democracy supporters hold placards as they take part in a New Year's Day rally on Wednesday, January 1 in Hong Kong.

Pro-democracy supporters wave flags during a countdown party in Tsim Sha Tsui district on New Year's Eve.

Police arrive to conduct a clearance operation in the Kowloon district of Hong Kong on December 31.

Protesters take photos of a 'Free HK' light display at a gathering in the Central district of Hong Kong on December 30.

A man is detained by riot police during a demonstration in a shopping mall at Sheung Shui district on December 28.

A protester reacts after police fire tear gas to disperse bystanders in the Jordan district of Hong Kong, early on December 25.

People celebrating the holidays react to tear gas as police confront protesters on Christmas Eve.

Protesters march in Hong Kong.

Protesters stage a rally outside the US Consulate in Hong Kong on Sunday, December 1. Hundreds gathered Sunday afternoon outside the US Consulate for another pro-US rally to show support for President Trump after he signed the Hong Kong Human Rights and Democracy Act into law.

People take part in a march from Tsim Sha Tsui to Hung Hom in Hong Kong on December 1.

Pro-democracy candidate Jimmy Sham, right, celebrates with a supporter after winning his election in the Sha Tin district, early November 25. "Today's result represents (my constituency's) support to protesters. The government should immediately establish the Five Demands and respond to the public's voices," Sham posted on Facebook, referencing a long-standing protest slogan.

Pro-democracy candidate James Yu hugs his girlfriend after winning his seat in district council elections, early November 25.

People line up to vote outside of a polling place in Hong Kong, November 24. More than 2.9 million people turned out to vote in Sunday's elections, which have been framed as a de facto referendum on the almost six months of ongoing protests.

Hong Kong Chief Executive Carrie Lam casts her ballot for the district council elections at a polling place, November 24. In a statement Monday, Lam said her government "respects the election results."

A group of protesters leave the Hong Kong Polytechnic University holding hands before surrendering to police in the Hung Hom district on November 22.

Protesters use clothes and helmets to form "SOS" at Hong Kong Polytechnic University on November 21.

Protesters raise their hands to represent the five demands of pro-democracy demonstrators during a rally in support of the Hong Kong Human Rights and Democracy Act in the U.S., at the IFC Mall in Hong Kong, on November 21.

Tables and chairs piled up to create a barrier are left behind by protesters who barricaded themselves inside the Hong Kong Polytechnic University.

A Fire Services Department rescue diver prepares to enter the sewage system on November 20 to search for protesters who escaped from the Hong Kong Polytechnic University.

Police detain a group of people after they tried to flee the Hong Kong Polytechnic University campus on November 19. Last week, thousands of student protesters streamed into the university and occupied the campus as the city's violent political unrest reached fever pitch.

A protester uses a flashlight while crawling through a sewer tunnel to see how wide it is as he and others try to find an escape route from the Hong Kong Polytechnic University on November 19.

A protester walks through a gymnasium at Hong Kong Polytechnic University on November 19.

Protesters react as police fire tear gas in the Kowloon area of Hong Kong, Monday, November 18.

Firefighters put out a burning car set on fire by protesters near Hong Kong Polytechnic University in the Tsim Sha Tsui district on November 18.

Police in riot gear move through a cloud of smoke as they detain a protester at the Hong Kong Polytechnic University in Hong Kong on November 18. Police have attempted to clear the university, which has been occupied by protesters for days as a strategic protest base.

Police fire tear gas as protesters attempt to leave Hong Kong Polytechnic University via a bridge on November 18.

A member of the police clashes with a protester at the Hong Kong Poytechnic University on November 18.

Protesters use a rope to lower themselves from a pedestrian bridge to waiting motorbikes to escape from police at Hong Kong Polytechnic University on November 18.

A protester throws an umbrella onto a fire at the barricaded main entrance of Hong Kong Polytechnic University on November 18.

An anti-government protester is detained at Hong Kong Polytechnic University on November 18.

An anti-government protester is showered down by volunteer medical workers after he was soaked by a police water cannons firing pepper spray-infused water at Hong Kong Polytechnic University on November 18.

Riot police fire tear gas and rubber bullets as protesters attempt to leave Hong Kong Poytechnic University on November 18.

A protester prepares to shoot an arrow during a confrontation with police.

Police use a water cannon outside the Hong Kong Polytechnic University.

A protester throws a Molotov cocktail at police on November 17.

Protesters use a catapult to fire bricks at the police from inside the Hong Kong Polytechnic University on November 17.

A woman tries to hold back riot police from approaching the Hong Kong University in Hong Kong on Saturday.

Protesters train to throw Molotov cocktails into a swimming pool on the campus of the Hong Kong Polytechnic University on November 14.

Protesters walk past barricades of bricks on a road near the Hong Kong Polytechnic University on November 14.

Demonstrators gather during a lunchtime protest in the financial district of Hong Kong on November 14.

A protester releases a flaming arrow to light a barricade at The Chinese University of Hong Kong (CUHK), Wednesday, November 13.

A Molotov cocktail, a gas mask and a yellow construction helmet are placed upon a bust of late hotel tycoon Hui Yeung Shing at the campus of The Chinese University of Hong Kong on November 13.

A fire is seen at a Mass Transit Railway (MTR) station during a demonstration at The Chinese University of Hong Kong on November 13.

Students attempt to clear tear gas canisters fired by riot police onto a sports track during a confrontation at the Chinese University in Hong Kong on Tuesday, November 12.

A man is detained during a protest at the Chinese University of Hong Kong on November 12.

Students block an escalator with chairs in an attempt to hamper police at the University of Hong Kong on November 12.

A protester is detained in the Central District of Hong Kong on November 11.

People react after tear gas was fired by police during a protest in Hong Kong's Central District on November 11.

Riot police face off with protesters at an entrance of a shopping mall during a demonstration on November 10.

A man is helped by a volunteer medic after police used pepper spray during a demonstration on November 10.

Students of the Hong Kong University of Science and Technology (HKUST) participate in a march on November 8, after hospital officials confirmed the death of student Chow Tsz-lok, 22. Police say Chow, a computer sciences student at HKUST, fell from the third floor to the second floor of a parking garage in the residential area of Tseung Kwan O in the early hours of November 4.

A person places a flower at a memorial for 22-year-old Hong Kong university student Chow Tsz-lok on November 8.

Students in gas masks are seen during a graduation ceremony at the Chinese University of Hong Kong on Thursday, November 7 in Hong Kong.

Firefighters stand outside the offices of China's Xinhua News Agency after its windows were damaged by protesters in Hong Kong on Saturday, November 2. Hong Kong riot police fired multiple rounds of tear gas and used a water cannon Saturday to break up a rally by thousands of masked protesters demanding autonomy after Beijing indicated it could tighten its grip on the Chinese territory.

Richard Chan, a candidate for the district council elections, reacts after being pepper-sprayed by police in Hong Kong on November 2.

Thousands of black-clad masked protesters streamed into Hong Kong's central shopping district for another rally on November 2.

A person dressed as President Donald Trump waves an American flag on a street in Hong Kong on Thursday, October 31, 2019. Hong Kong authorities braced as pro-democracy protesters urged people on Thursday to celebrate Halloween by wearing masks on a march in defiance of a government ban on face coverings.

A man dressed as the Joker for Halloween walks past police officers on October 31.

Pro-democracy activist Joshua Wong (second from left) and Kelvin Lam (second from right) shout slogans as they meet the media outside the Legislative Council (LegCo) in Hong Kong on October 29, 2019, after Wong was barred from standing in an upcoming local election.

A protester throws a tear gas canister on October 27 in Hong Kong.

A couple wearing Guy Fawkes masks watch a rally at Chater Garden in Hong Kong on October 26.

Protesters start a fire in front of the MTR station during demonstration on October 27.

Tear gas smoke is seen exploding over reporters during an anti-government protest in Mong Kok district in Hong Kong on October 27.

High school students take part in a human chain rally outside Kowloon park in Hong Kong on October 25.

Police fire blue dye toward protesters in Hong Kong on Sunday, October 20. Blue dye can be used to stain and identify masked protesters.

A pro-democracy protester is arrested by police on October 20.

Pro-democracy lawmakers protest as Hong Kong Chief Executive Carrie Lam delivers a speech at the Legislative Council on Wednesday, October 16. Lam's annual policy address ended in chaos as pro-democracy lawmakers repeatedly disrupted her speech and heckled her with calls to honor the demands of anti-government protesters.

A protester shoots a basketball at a poster of Lam during a rally on Tuesday, October 15.

Protesters set fire to a Bank of China branch on Sunday, October 13. It was the 19th consecutive weekend of anti-government protests in Hong Kong.

Protesters use the lights on their phones during a rally in central Hong Kong's business district.

A protester attempts to break a tourist bus window on October 13.

Protesters wearing masks in defiance of a recently imposed ban gather at a shopping mall on October 13.

Supporters surround a police bus carrying political activist Edward Leung as it leaves the High Court in Hong Kong on Wednesday, October 9. Several hundred masked protesters gathered at Hong Kong's High Court for the appeal hearing of Leung, who was sentenced to six years in prison for his part in a violent clash with police.

A woman is treated after police fired tear gas to disperse protesters in the Mong Kok district of Hong Kong on October 7.

Pro-democracy protesters gather in a shopping mall on October 7.

Rescue personnel check the bottom of a taxi after the driver allegedly drove onto the pavement, hitting protesters in Hong Kong on October 6.

A China Construction Bank is seen vandalized in the Causeway Bay area of Hong Kong on October 6.

Pro-democracy protesters set fires in the street in the Causeway Bay area.

People protest the ban against masks on Saturday, October 5.

An anti-government protester stands near a fire on Friday, October 4.

Protesters move a statue depicting a protester armed with gas mask, helmet and umbrella on the streets of Hong Kong on October 4.

Protesters set a fire at a China Construction Bank.

Protesters spray paint slogans at the entrance to a tunnel on October 4.

A store is in shambles after being vandalized by protesters.

Pro-democracy demonstrators hold up their hands to symbolize their five demands during a rally on October 4.

Protesters throw petrol bombs at the gate to the Tsuen Wan police station on Wednesday, October 2.

Schoolmates of a student who was shot in the chest by police place their hands on their chests during a protest on October 2.

A young protester was shot?Tuesday, October 1, as violent protests erupted across Hong Kong on the 70th anniversary of the People's Republic of China. The incident marked a major escalation in violence that could galvanize?the protest movement in Hong Kong.

Police detain an anti-government protester on October 1. Thousands of black-clad protesters marched in central Hong Kong as part of multiple pro-democracy rallies.

Police tackle and arrest pro-democracy protesters during clashes on October 1.

A protester is seen carrying rocks on a street on October 1. While events in Beijing were being held to mark the 70th anniversary of the founding of the People's Republic of China, demonstrators rallied throughout Hong Kong.

Protesters react after police fired tear gas near the central government offices in Hong Kong's Admiralty area on October 1.

Pro-democracy protesters form a "Pepe the Frog" themed human chain on Monday, September 30.

A man is detained by Hong Kong police during a protest in the Causeway Bay shopping district on Sunday, September 29.

Bus passengers look at a burning barricade lit by pro-democracy protesters in front of the Mong Kok police station on Sunday, September 22.

Pro-democracy protesters sing songs and chant slogans during a rally inside a shopping mall on September 22.

A pro-China supporter, center, is escorted by police after confronting journalists in Hong Kong on September 15.

Pro-government and anti-government supporters chant against one another at a shopping mall in Hong Kong on Friday, September 13. The sign translates to "Stop violence and curb chaos; safeguard Hong Kong."

Demonstrators hold up their cell phone lights as they form a human chain at the Peak, a tourist spot in Hong Kong, on September 13.

Police escort an injured man after he attacked protesters outside Prince Edward station in Hong Kong on Friday, September 6.

Protesters burn paper money to pay their respects to injured protesters.

Protesters prepare to clash with police outside the Mong Kok police station on September 6.

A protester is detained by police at the Po Lam Mass Transit Railway station on Thursday, September 5.

A man watches televisions at a store in Hong Kong as Chief Executive Carrie Lam announces the withdrawal of the extradition bill on Wednesday, September 4.

A woman gets emotional on September 4 while paying her respects to protesters who were injured a few days earlier.

Demonstrators travel through a railway station during a rally on Tuesday, September 3.

Students wearing gas masks and helmets hold a banner that reads "five major demands are indispensable" at St. Francis' Canossian College in Hong Kong.

Protesters gather in the bus terminal at Hong Kong International Airport on Sunday, September 1. Hundreds of pro-democracy activists attempted to block transport routes to the city's airport.

A passenger walks to the airport on September 1 as pro-democracy protesters blocked a road outside the airport.

A protester uses a slingshot outside the Central Government Complex during clashes with police on Saturday, August 31. Thousands of pro-democracy protesters held an anti-government rally one day after several leading activists and lawmakers were arrested in a sweeping crackdown.

Protesters light a Molotov cocktail on August 31.

Protesters take cover as policemen fire blue-colored water on them. Blue dye can be used to stain and identify masked protesters.

A surveillance camera is covered with white paint during protests.

An overhead view shows protesters reacting after police fired tear gas on August 31.

Pro-democracy activists Agnes Chow and Joshua Wong speak to the media after they were released on bail at the Eastern Magistrates Courts on Friday, August 30. They were arrested earlier the same day in a dragnet across Hong Kong.

Protesters clash with police after a rally in Hong Kong's Tsuen Wan district on Sunday, August 25. It was one of the most violent nights seen in Hong Kong since mass protests began in June.

A police officer aims a gun in front of a protester on August 25.

Some protesters shine laser pointers at police lines on August 25.

Protesters pick up bricks to be used as projectiles on August 24.

Police retreat after clashing with protesters on August 24.

Cell phones shine from the top of Lion Rock on August 23.

Protesters march under umbrellas on Sunday, August 18.

Tens of thousands of protesters showed up in the streets on August 18.

A protester participates in a march on Saturday, August 17. His eye is covered with red gauze, referencing a woman who was allegedly shot in the eye with a beanbag round during clashes between protesters and police.

Protesters point lasers at the Sham Shui Po police station on August 14.

A police officer falls over an airport luggage trolley during a scuffle with pro-democracy protesters on Tuesday, August 13. For two days, protesters flooded the airport. Check-ins were suspended and dozens of outgoing flights were canceled.

A traveler passes her luggage to security guards as she tries to enter the departures gate.

A display board shows canceled flights on August 13.

Medics look after a woman who received a facial injury during clashes on Sunday, August 11.

A pro-democracy protester is held by police outside the Tsim Sha Tsui police station on August 11.

Police fire tear gas at protesters during a demonstration in the Wong Tai Sin District on Monday, August 5.

A train passenger gestures toward a protester, right, who was preventing the doors of a train from closing on August 5. The protester was trying to disrupt Hong Kong's morning rush-hour commute.

A man comforts his pregnant wife near a train platform after protesters blocked the train doors on August 5.

A protester stands in tear gas during a confrontation with police in the early hours of Sunday, August 4.

A Chinese flag floats in water after it was thrown by protesters during a demonstration on Saturday, August 3.

Members of Hong Kong's medical sector attend a protest in Edinburgh Place on Friday, August 2.

The emblem on the China Liaison Office is protected by plexiglass during a demonstration on Sunday, July 28.

A protester flees from baton-wielding police in the Yuen Long district of Hong Kong on Saturday, July 27.

A protester looks through umbrellas during the clashes with police on July 27.

Travelers watch as protesters rally at Hong Kong's international airport on Friday, July 26.

Protesters clash with police on Sunday, July 21.

Masked men in white T-shirts are seen after attacking anti-extradition bill demonstrators at a train station in Yuen Long.

Medical workers help a protester affected by tear gas on July 21.

The office of pro-Beijing lawmaker Junius Ho was trashed by protesters in Hong Kong's Tsuen Wan district.

Police officers use pepper spray to disperse protesters after a rally in the Sheung Shui district on Saturday, July 13.

A demonstrator sprays paint inside a chamber at Hong Kong's Legislative Council building, where protesters forced their way in on Monday, July 1.

A protester smashes a window of the Legislative Council building.

Columns of sunlight are cast on a crowd during the march on July 1.

Helicopters carrying the flags of China and Hong Kong fly over demonstrators on July 1.

A police officer uses pepper spray during a clash with protesters on July 1.

A protester wearing a T-shirt with the word "revolution" walks past an inscription on a road that reads "Long Live HK."

Police detain protesters near the government headquarters in Hong Kong on July 1.

An overhead view shows thousands of protesters marching through a Hong Kong street on Sunday, June 16.

Protesters run after police fired tear gas on Wednesday, June 12.

By the morning of June 12, tens of thousands of mainly young people had arrived in the area, blocking streets and bringing central Hong Kong to a standstill.

A demonstrator holds a sign during the June 12 rally.

Police officers charge toward protesters during clashes on Monday, June 10. It was a continuation of protests that started the day before.

Protesters on June 9 waved placards and wore white -- the designated color of the rally. "Hong Kong, never give up!" some chanted.

Students wear chains during a demonstration on Saturday, June 8.

In pictures: Hong Kong unrest

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Friday night also saw a second protester shot with a firearm in an incident in Yuen Long – the site of an attack on protesters by alleged Triad gangsters in July which has become a key rallying cry for the anti-government movement.

Police said after the police officer was isolated by protesters, he “fell onto the ground and was beaten up by the group. Facing serious threat to his life, he fired one shot in self-defense. A rioter then threw a petrol bomb at him and his body was on fire.”

A video circulating online showed the officer, wearing a white t-shirt, getting up from the floor when a petrol bomb hits him and engulfs him in flames. The officer staggers forward and manages to extinguish the fire on his clothes, but appears severely dazed. He drops his weapon and it is almost grabbed by a protester before he lunges forward and manages to wrestle it away from them.

Police superintendent Yolanda Yu said she believed the shot in Yuen Long “was fired under the right circumstances.”

Authorities said a 14-year-old boy was injured in the shooting, and hospital authorities said early Saturday the boy was shot in the left thigh and was in “critical condition.”

A protest march Saturday afternoon on Hong Kong island attracted a few hundred participants. They chanted for the mask law to be repealed, but many opted to stay home, some unable to get there due to transport disruptions, others unwilling to put themselves at risk of being unable to leave were police to sweep in and make arrests.

CNN’s Sareena Dayaram, Jo Shelley and Maisy Mok contributed reporting.