Organisers initially applied for a permit for a march, but the police only agreed to a static rally in the park, saying previous marches had turned violent.
The Hong Kong Government also condemned the attacks, calling them "outrageous", and accused "rioters" of exploiting peaceful public assemblies "as a cover for vandalism and attacks".
"If the government refuses to give us universal suffrage, this is a clear sign that they are still suppressing our human rights, our freedom and our democracy", Lau said.
Earlier in the day, Lau said he believes more large-scale protests are needed for global attention to return to Hong Kong, adding: "I think Hong Kong has not been the focus of the world anymore". For decades, the people of Hong Kong have been calling for all seats to be elected.
The police say some protesters attacked officers and set fires on the street. To save their comrades, riot police officers intervened with sticks, throwing tear gas and pepper sprays.
The group had planned to hold a march after the rally, going from Chater Road to Causeway Bay, but police rejected their application, citing safety concerns.
The bill that would have allowed Hong Kong residents to be sent to mainland China in court has since been withdrawn.
Captain Marvel 2 Gets New Writer And Director
The directing tandem of Anna Boden and Ryan Fleck directed the origin story of the first film (which co-starred Samuel L. Marvel is now scouting for their replacement and hopes to land a female director for Captain Marvel 2 .
At Pedder Street, several blocks from Chater Garden, police arrested at least 12 people, among them 9 males.
As the protests started peacefully, they increasingly sank into violence after protesters were frustrated by the government's response.
Once protesters spilled onto the streets, some of them, wearing all-black clothing, barricaded the roads with umbrellas and street furniture, dug up bricks from the pavement and smashed traffic lights.
The Hong Kong Civil Assembly Team on Monday morning said Lau's charges had been changed to obstruction of a police officer for the execution of duty and violating the terms of the letter of no objection issued for the rally.
A protester who identified himself as K, told The Epoch Times' sister media NTD that he was concerned that Hong Kong police have become more aggressive and beaten protesters-not just the more aggressive protesters who are at the frontlines, but also those who are nonviolent.
The protests, which have since broadened to include demands for universal suffrage and an independent investigation into police handling of the demonstrations, have lost some of their intensity in recent weeks. "Foreign governments, legislatures or organizations have absolutely no role in matters relating to the constitutional development of Hong Kong and should not express any opinion or take any action in an attempt to influence or interfere in the discussions of related matters in Hong Kong".