Secondary school students perform a barefoot “pilgrimage of suffering” to support the Occupy Central civil disobedience movement at the Admiralty protest site in Hong Kong November 30, 2014. It has been two months since police first fired tear gas to disperse demonstrators from the main protest site in the Admiralty district next to government offices in the heart of the Asian financial centre. (Photo by Bobby Yip/Reuters)

A leader carries a yellow umbrella, symbol of the Occupy Central civil disobedience movement, as other secondary school students perform a barefoot “pilgrimage of suffering” to support the movement at the Admiralty protest site in Hong Kong November 30, 2014. (Photo by Bobby Yip/Reuters)

Student leader Joshua Wong stands outside the legislative council protest site in Hong Kong, November 30, 2014. Student activist groups have called for an escalation of the protests in Admiralty. Thousands of police are on standby, according to the South China Morning Post. (Photo by Bobby Yip/Reuters)

Protesters gather at the legislative council protest site in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

Police use pepper spray during clashes with pro-democracy protesters close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

Police use pepper spray during clashes with pro-democracy protesters close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

A pro-democracy protester is treated after police used pepper spray during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

Police use pepper spray during clashes with pro-democracy protesters at a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

Injured protesters are treated during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

Policemen clash with pro-democracy protesters during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

Pro-democracy protesters are treated after policemen used pepper spray during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

A policeman uses pepper spray while clashing with pro-democracy protesters during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

Policemen wearing protective gear walk up a flight of stairs as pro-democracy protesters rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

A policeman uses pepper spray while clashing with pro-democracy protesters close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

Cars turn back as pro-democracy protester block a road outside the chief executive office during a rally in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

Pro-democracy protester run as they carry barricades removed at a tunnel during a rally close to the chief executive office in Hong Kong, November 30, 2014. Hundreds of Hong Kong pro-democracy activists scuffled with police on Sunday as they tried to encircle government headquarters, defying orders for protesters to retreat after more than two months of demonstrations. (Photo by Bobby Yip/Reuters)

A pro-democracy protester reacts while walking in a tunnel during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

Pro-democracy protesters block the road outside the chief executive office during a rally in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

Pro-democracy protesters wearing goggles and masks block a road outside the chief executive office during a rally in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

Policemen and pro-democracy protesters engage in a stand-off during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

Police shout at pro-democracy protesters during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

A policeman uses pepper spray at pro-democracy protesters over barricades during a rally close to the chief executive office in Hong Kong, November 30, 2014. (Photo by Tyrone Siu/Reuters)

Policemen stand guard outside the chief executive office during a pro-democracy rally in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

A pro-democracy protester waves outside the chief executive office during a rally in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

A woman holds a board with a contact number people can seek help from in case they are arrested outside the chief executive office during a pro-democracy rally in Hong Kong, November 30, 2014. (Photo by Bobby Yip/Reuters)

A pro-democracy protester climbs onto a divider to leave as riot police attempt to clear the demonstration site, close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

Pro-democracy protesters hold umbrellas as they stand in front of riot police, close to the chief executive office in Hong Kong November 30, 2014. (Photo by Tyrone Siu/Reuters)

Pro-democracy protesters pull a man away from riot police after a rally close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

Riot police hold batons as they attempt to clear pro-democracy protesters from a demonstration site close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

Pro-democracy protesters climb over a divider to leave as riot police attempt to clear the demonstration site, close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

Riot police use pepper spray as they attempt to clear a demonstration site close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

A riot policeman detains a pro-democracy protester close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

A riot police officer holds a baton as he attempts to clear a demonstration site close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

A pro-democracy protester reacts to pepper spray, as riot police attempt to clear a demonstration site close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

Pro-democracy protesters leave as riot police attempt to clear the demonstration site, close to the chief executive office in Hong Kong December 1, 2014. (Photo by Tyrone Siu/Reuters)

A pro-democracy protester is detained by riot police during a confrontation outside government headquarters in Hong Kong early December 1, 2014. (Photo by Bobby Yip/Reuters)

A pro-democracy protester who was injured during clashes with riot police receives medical treatment outside government headquarters in Hong Kong November 30, 2014. (Photo by Bobby Yip/Reuters)

Riot policemen detain a pro-democracy protester during a confrontation outside government headquarters in Hong Kong early December 1, 2014. (Photo by Bobby Yip/Reuters)

A riot policeman (R) shouts at pro-democracy protesters (L) during a confrontation outside government headquarters in Hong Kong early December 1, 2014. (Photo by Bobby Yip/Reuters)

Pro-democracy protesters stand in front of riot police during a confrontation outside government headquarters in Hong Kong early December 1, 2014. (Photo by Bobby Yip/Reuters)

A riot policeman removes a tent set up by pro-democracy protesters at a protest site outside government headquarters in Hong Kong early December 1, 2014. (Photo by Bobby Yip/Reuters)

Riot policemen stand guard in front of pro-democracy protesters during a confrontation outside government headquarters in Hong Kong early December 1, 2014. (Photo by Bobby Yip/Reuters)