至周五（21日）晚上有近万名示威者包围香港警察总部。（路透社）

示威者星期五（6月21日）早上在金钟政府总部聚集，进而聚集在警察总部，金钟道一带，抗议港府拒绝宣布全面撤回修法草案。香港六所大学学生会6月19日声明，要求港府20号下午5点前撤回修例草案、收回6.12“暴动”定性、撤销示威者控罪，并追究警队涉嫌滥用暴力。如果上述诉求得不到满足，将把抗争行动升级。以下图片来自路透社。

Umbrellas are placed to block security cameras outside a police headquarters, during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu 

Demonstrators rest outside the Legislative Council building during a demonstration demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

A demonstrator looks into her phone outside the Legislative Council building during a demonstration demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

A demonstrator walks near a banner hanging outside the Legislative Council building during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters use barricades to block a road during a demonstration demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters block a road during a demonstration demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

People protest outside police headquarters, demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Pro-democracy activist Joshua Wong speaks as people protest outside police headquarters, demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters use barricades to block a road during a demonstration demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

A yellow umbrella is seen behind a police vehicle stopped by protesters blocking a road during a demonstration demanding Hong Kong's leaders step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

Protesters surround police headquarters during a demonstration demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

A protester holding a Union Jack flag blocks a road during a demonstration demanding Hong KongÕs leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

Protesters block a road during a demonstration demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters block the Inland Revenue building during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

A barricade blocking the road is pictured during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters walk past barricades as they block one of the main streets during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters move barricades as they block one of the main streets during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters run on a over-bridge move as they block one of the main streets during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Police officers stand guard in front of a police headquarter in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

Police officers lock the gate of a police headquarter after protesters attempt to storm in, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

A protester wears a gas mask in case of a tear gas in front of a police headquarter in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

A protester plays a piano as he rests inside the Hong Kong Art Centre, during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters clean rubbish during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters rest along a road near a police headquarters during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

People protest outside police headquarters, demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

Police officers protect themselves from eggs thrown into the wall of police headquarters as people protest demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Eggs lay on the street as people protest demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

A protester throws an egg into the wall of police headquarters as people protest demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

A protester prepares to throw eggs at the police headquarters in Hong Kong, June 21, 2019. REUTERS/Ann Wang

Smashed eggs are seen on a wall of police headquarters during a protest demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

People protest outside police headquarters, demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Police officers are seen as people protest outside police headquarters, demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

People protest outside police headquarters, demanding Hong Kong’s leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Ann Wang

Police and staff trapped inside the police headquarters look out a window in Hong Kong, June 21, 2019. REUTERS/Ann Wang

Joshua Wang speaks to protesters outside the police headquarters in Hong Kong, June 21, 2019. REUTERS/Ann Wang

Protesters protect themselves with helmets, masks and foam pads during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

A protester covers her arms with plastic bags to protect herself from pepper spray during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

抗议者举着“612不是暴动 释放抗争者”标语牌

A protester walks past barricades set up to block the police headquarters, during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Protesters walk along a main road blocked by protesters during a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu

Pro-democracy activist Joshua Wong attends a demonstration demanding Hong Kong's leaders to step down and withdraw the extradition bill, in Hong Kong, China June 21, 2019. REUTERS/Tyrone Siu