About 100 protesters remained stranded at the Hong Kong Polytechnic University on Tuesday as police besieged the campus after arresting hundreds of protesters.
Police surrounded the area Sunday, using water cannons, tear gas and heavy vehicles to hold it. protesters in a dramatic escalation of demonstrations.
Hundreds of people were evacuated from the crime scene Monday night during talks between university officials and police, local news bureaus said. Hong Kong's largest English-language newspaper, The Standard, reports that others used ropes to climb a bridge to a street where they had run out of motorcycles.
An Associated Press quoted City CEO Kari Lam as saying at a news conference on Tuesday that about 600 people had left campus, including about 200 who are under 1
She said that the other 400 who left had been arrested.
The Hong Kong Red Cross said on Tuesday that it had treated about 40 people at the university, some of whom had suspected fractures and head injuries and burns.
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The opposition continued when the Chinese government struck the highest court in Hong Kong, saying it had no power to repeal a law banning protesters from wearing masks.  The Supreme Court ruled on Monday that emergency laws banning wearing masks during protests were unconstitutional, saying they were "incompatible" with the legal structure that was created when Britain returned Hong Kong to China in 1997.
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It took Beijing less than a day to announce the decision as invalid. A spokesman for the Legislative Affairs Committee of the National People's Congress said Tuesday that the equivalent of the Hong Kong constitution "can only be assessed and decided by the National People's Congress Standing Committee," Reuters and Hong Kong agencies reported.
Separately, the South China Morning Post cites a spokesman for the Chinese Hong Kong and Macao Office, saying the Supreme Court's ruling would have "serious and negative socio-political impact."
Xinhua, the official Chinese news agency, confirmed both claims.
For more than five months, hundreds of thousands of protesters, many wearing masks to protect their identities, took to the streets to initially protest a proposed law that would allow Hong Kong to extradite crime suspects in mainland China
The measure was withdrawn in September, but protests continued as a broader protest against China's control of the island.  Related
Chris Tang, Hong Kong's new police commissioner, said in an interview that police alone cannot end the violence.
Tang, who took office Tuesday succeeding Stephen Lo, said in an interview with the South China Morning Post that widespread violence was approaching "very close to terrorism" and said that every day, residents were partly to blame through silence and tolerance.
"If everyone had gone out early to condemn the violence, society would not have gotten into that state in five months," Tang said.
"I completely disagree that our officers are out of control and have used excessive force," he said. "We use force when there is violence. Many of our officers have been brutally attacked. They [draw their guns] defend themselves, not suppress the crowd."