Scuffles broke out between demonstrators and police in Hong Kong on Thursday as hundreds of people persevered with a protest against an extradition law with mainland China, a day after police fired tear gas and rubber bullets to break up big crowds.

Protests around the city’s legislature on Wednesday forced the postponement of debate on the extradition bill, which many people in Hong Kong fear will undermine freedoms and confidence in the commercial hub.

Hong Kong’s China-backed Chief Executive Carrie Lam condemned the violence and urged a swift restoration of order but has vowed to press ahead with the legislation despite the reservations about it, including within the business community.

The number of protesters milling about outside the legislature in the financial district fell overnight but rose again through the day on Thursday to about 1,000 at one stage.

They expect the legislature, which has a majority of pro-Beijing members, will try to hold the debate at some stage, though it issued a notice saying there would be no session on Thursday.

“We will be back when, and if, it comes back for discussion again,” said protester Stephen Chan, a 20-year old university student.

Activists in Hong Kong have called for a march on Sunday and a boycott of work and classes on Monday in protest against an extradition bill that could result in suspects being sent to mainland China.

On Thursday, a day after a demonstration by thousands of people was violently cleared, a group of pro-democracy politicians and activists tried to march on the residence of Hong Kong’s chief executive, Carrie Lam, but were stopped by police.

“We need to come out in unity. We call on all demonstrators. We can win if all of us come out,” said Lee Cheuk-yan, a politician and activist, condemning the police and Lam, who has been pushing the bill.

Debate in the Legislative Council over the bill was postponed again on Thursday. The proposed law, which critics say Beijing could use to target political enemies in Hong Kong, has brought up to a million people on to the streets to protest. Beijing and Hong Kong authorities insist the law is aimed at combating crime.