When a different police officer approaches with a drawn handgun to rescue his colleague on the ground, the protester turns to him and strikes his trigger hand with a pipe. Instantly, the officer fires on the man at point-blank range. The protester falls, and is not treated for several minutes as the police watch for attacks, the video shows.
The Hong Kong police commissioner, Stephen Lo, said the officer who fired on Mr. Tsang had acted in a “legal and reasonable” manner, having given a verbal warning before opening fire. The officer had been assaulted at close quarters, Mr. Lo said, and had no other choice but to shoot. “The range was not determined by the police officer, but by the perpetrator,” he said.
Mr. Lo added that the police had arrested Mr. Tsang, but had not yet decided whether to press charges. On Wednesday morning, the principal and vice principal of the Ho Chuen Yiu public secondary school said that Mr. Tsang would not be punished and would keep his place in the school.
Some supporters of the police and Hong Kong’s pro-Beijing political elites urged the school to take a harder line.
“Could you not directly denounce his wrongdoing,” Leung Chun-ying, a former Hong Kong chief executive, wrote on his Facebook page on Wednesday. Before being shot, Mr. Leung wrote, Mr. Tsang had “beat the police on the streets in full gear along with other rioters.”
Joseph Cheng, a retired professor of political science at the City University of Hong Kong, said the shooting could turn Mr. Tsang into a powerful symbol for activists on either side of the protests.
In less than 24 hours after the shooting, Mr. Tsang was being hailed as a hero and derided as a thug.