Police in riot gear ask a woman to take off her mask outside a train station in Hong Kong, Sunday, Nov. 3, 2019. Riot police stormed several malls in Hong Kong on Sunday in a move to thwart more pro-democracy protests, as the city's leader heads to Beijing for talks on deepening economic integration between the semi-autonomous Chinese territory and mainland China. (AP Photo/Dita Alangkara)

A riot police fires pepper spray toward people at a shopping mall in Hong Kong, Sunday, Nov. 3, 2019. Riot police stormed several malls in Hong Kong on Sunday in a move to thwart more pro-democracy protests, as the city's leader heads to Beijing for talks on deepening economic integration between the semi-autonomous Chinese territory and mainland China. (AP Photo/Dita Alangkara)

A riot police officer fires pepper spray toward people at a shopping mall in Hong Kong, Sunday, Nov. 3, 2019. Riot police stormed several malls in Hong Kong on Sunday in a move to thwart more pro-democracy protests, as the city's leader heads to Beijing for talks on deepening economic integration between the semi-autonomous Chinese territory and mainland China. (AP Photo/Dita Alangkara)

Riot police form a line at a shopping mall in Hong Kong, Sunday, Nov. 3, 2019. Riot police stormed several malls in Hong Kong on Sunday in a move to thwart more pro-democracy protests, as the city's leader heads to Beijing for talks on deepening economic integration between the semi-autonomous Chinese territory and mainland China. (AP Photo/Dita Alangkara)

A man is detained by police outside a MTR station in Sha Tin district of Hong Kong on November 3, 2019. (Photo by Philip FONG / AFP)

A man (L) reacts as a police personnel points pepper spray to reporters (unseen) inside a MTR station in Sha Tin district of Hong Kong on November 3, 2019. (Photo by Philip FONG / AFP)

Passengers and bystanders gather as police patrol inside a MTR station in Sha Tin district of Hong Kong on November 3, 2019. (Photo by Philip FONG / AFP)

Police try to detain a man (R) inside a MTR station in Sha Tin district of Hong Kong on November 3, 2019. (Photo by Philip FONG / AFP)

Paramedics carry away a wounded person on a stretcher after a bloody knife fight broke out at a shopping mall in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Paramedics carry away a wounded person on a stretcher after a bloody knife fight broke out at a shopping mall in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Paramedics carry away a wounded person on a stretcher after a bloody knife fight broke out at a shopping mall in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Blood and debris are seen on the ground at the entrance of a shopping mall after a bloody knife fight broke out in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Blood and debris are seen on the ground at the entrance of a shopping mall after a bloody knife fight broke out in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Blood and debris are seen on the ground at the entrance of a shopping mall after a bloody knife fight broke out in Hong Kong on November 3, 2019. (Photo by VIVEK PRAKASH / AFP)

Blood and debris are seen on the ground at the entrance of a shopping mall as riot police secure the scene after a bloody knife fight broke out in Hong Kong on November 3, 2019. (Photo by VIVEK PRAKASH / AFP)

Blood and debris are seen on the ground at the entrance of a shopping mall as riot police secure the scene after a bloody knife fight broke out in Hong Kong on November 3, 2019. (Photo by VIVEK PRAKASH / AFP)

Blood is seen splattered on a glass panel at the entrance of a shopping mall as riot police secure the scene after a bloody knife fight broke out in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police arrest a protester inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police arrest a protester inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police arrest a protester inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police arrest a protester inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

A graffiti that reads "#Free HK" adorns the side of a bypass near a housing estate in the Tai Koo Shing area in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police keep watch at the site of a bloody knife fight at the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Shoppers and local residents look out towards the site of a bloody knife fight from inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Residents help a woman after she was pepper sprayed during an argument with riot police inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Residents shout and gesture towards riot police who entered the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

A riot police officer chases a protester while wielding a can of pepper spray inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police raise their shields while forming a barricade line inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Protesters form a human chain inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Protesters join hands to form a human chain inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

People look up at protesters and residents gathered inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Protesters and residents gather inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police descend an escalator inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

A riot police officer points a can of pepper spray inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police descend an escalator inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police search for protesters inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police arrest a journalist (wearing red shirt) from the local media company Stand News inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police arrest a journalist (wearing red shirt) from the local media company Stand News inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Riot police descend an escalator inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)

Protesters are reflected in a mirror as they join hands to form a human chain inside the City Plaza mall in the Tai Koo Shing area in Hong Kong on November 3, 2019, after a bloody knife fight wounding six people triggered there. - A bloody knife fight in Hong Kong left six people wounded on November 3 evening, including a local pro-democracy politician who had his ear bitten off, capping another chaotic day of political unrest in the city. (Photo by VIVEK PRAKASH / AFP)