LONDON, UNITED KINGDOM – 2021/03/01: A Hong Kong supporter wearing a gas mask holds a banned protest flag saying Free Hong Kong, Revolution Now during the protest. About 50 Hong Kong supporters gathered in Piccadilly Circus in London to express solidarity in support of the 47 Hong Kong pro-democracy activists who helped in the primary election last year and were charged with conspiracy to subvert state power under the National Security Law as they attend their first court hearing in Hong Kong. (Photo by May James/SOPA Images/LightRocket via Getty Images)