An anti-extradition bill protester puts a memo on "Lennon Walls" in Hong Kong's district Yau Tsim Mong, China, August 3, 2019.

Anti-extradition bill protesters stop a taxi as they bock a road in Hong Kong's district Yau Tsim Mong, China, August 3, 2019.

Anti-extradition bill protesters gather during a march in Hong Kong, China, August 3, 2019.

A man knees down as he asks anti-extradition bill protesters and riot police to stop, in Hong Kong, China, August 3, 2019.

Police officers walk on a street after they dispersed anti-extradition bill protesters, in Hong Kong, China, August 3, 2019.

An anti-extradition bill protester carries an American flag during the march at Mongkok, in Hong Kong, China, August 3, 2019.

An emergency team member carries an anti-extradition bill protester during a march in Hong Kong, China, August 4, 2019.

Pro-government supporters dress up white t-shirts as they attend a rally to support the police and call for an end to violence in Hong Kong, China August 3, 2019. The sentence reads " Protect the rule of law".

An anti-extradition bill protester attends a march in Hong Kong, China, August 3, 2019.

Pro-government supporter attends a rally to support the police and call for an end to violence in Hong Kong, China August 3, 2019.

An anti-extradition bill protester holds a placard depicting Hong Kong's Chief Executive Carrie Lam during a march at Mongkok, in Hong Kong, China, August 3, 2019.

A car is seen damaged by bricks at a police station during an anti-extradition bill protest in Hong Kong, China, August 3, 2019.

Anti-extradition bill protesters march in Hong Kong, China, August 3, 2019.

Anti-extradition bill protesters march in Mongkok, Hong Kong, China, August 3, 2019.

Anti-extradition bill protesters gather during a march in Hong Kong, China, August 3, 2019.

Riot police stand guard at Wong Tai Sin, a residential area, after an anti-extradition bill protest in Hong Kong, China August 4, 2019.

Anti-extradition bill protesters march at Mongkok, in Hong Kong, China, August 3, 2019.

Anti-extradition bill protesters march at Mongkok, in Hong Kong, China, August 3, 2019.

Anti-extradition bill protesters gesture as they try to confront with police officers during a march in Hong Kong, China, August 4, 2019.

Anti-extradition bill protesters clash with police during a march in Hong Kong, China, August 4, 2019.

Riot police walk past a restaurant at Wong Tai Sin, a residential area, after an anti-extradition bill protest in Hong Kong, China August 4, 2019.

Anti-extradition bill protesters gesture as they attend a march at Wong Tai Sin, a residential area, in Hong Kong, China, August 4, 2019.

Anti-extradition bill protesters march at Mongkok, in Hong Kong, China, August 3, 2019.

Police officers walk on a street after they dispersed anti-extradition bill protesters, in Hong Kong, China, August 3, 2019.

Men reacts as riot police try to disperse them at Wong Tai Sin, a residential area, after an anti-extradition bill protest in Hong Kong, China August 4, 2019.

Anti-extradition bill protesters occupy a road leading from Cross-Harbour Tunnel in Hong Kong, China, August 3, 2019.

A woman faces police officers during an anti-extradition bill protesters march in Hong Kong, China, August 4, 2019.

Anti-extradition bill protesters march at Mongkok, in Hong Kong, China, August 3, 2019.

Pro-government supporters attend a rally to support the police and call for an end to violence in Hong Kong, China August 3, 2019.

Anti-extradition bill protesters gather during a march in Hong Kong, China, August 3, 2019.

Anti-extradition bill protesters clash with off duty police during a march at Wong Tai Sin, a residential area, in Hong Kong, China, August 4, 2019.