Demonstrators holding umbrellas march during a protest in the Kwai Fong district of Hong Kong, China, on Sunday, Aug. 25, 2019. A Hong Kong police officer fired a weapon, water cannons were deployed for the first time and multiple volleys of tear gas were launched in running skirmishes with protesters in the 12th weekend of unrest in the Asian financial center. Photographer: Paul Yeung/Bloomberg via Getty Images