League of Social Democrats leader Chan Po Ying (C) argues with police officers before being taken away in the Causeway Bay shopping district of Hong Kong on June 4, 2023, close to the venue where Hong Kong people traditionally gather annually to mourn the victims of China's Tiananmen Square crackdown in 1989 which the authorities have banned and vowed to stamp out any protests on the anniversary on June 4. (Photo by Peter PARKS / AFP)