This Sept. 2, 2019 photo by Reuters photographer Tyrone Siu, provided by Columbia University, shows an anti-extradition bill protester detained by riot police during skirmishes between the police and protesters outside Mong Kok police station, in Hong Kong, China. The photography staff of Reuters was awarded the 2020 Pulitzer Prize for Breaking News Photography, in New York, Monday May 4, 2020, for wide-ranging and illuminating photographs of Hong Kong as citizens protested infringement of their civil liberties and defended the region's autonomy by the Chinese government. (Courtesy of Reuters via AP)

反引渡法案抗议者在香港旺角警察局外