TOPSHOT - Police fire tear gas on protesters to disperse them after a march against a controversial extradition bill in Hong Kong on July 21, 2019. - Hong Kong descended into chaos on the night of July 21 as riot police fired multiple volleys of tear at anti-government protesters, hours after China's office in the city was daubed with eggs and graffiti in a vivid rebuke to Beijing's rule. (Photo by Laurel CHOR / AFP)