A police officer in riot gear holds up a purple flag warning anti-government protesters they may be violating the national security law during an illegal demonstration in Causeway Bay on July 1, the 23rd anniversary of the establishment of the Hong Kong Special Administrative Region. Photo: Sam Tsang
A police officer in riot gear holds up a purple flag warning anti-government protesters they may be violating the national security law during an illegal demonstration in Causeway Bay on July 1, the 23rd anniversary of the establishment of the Hong Kong Special Administrative Region. Photo: Sam Tsang