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In this picture taken on May 25, 2020, 29-year-old Nok, who quit his nursing job to join the city's pro-democracy protests full-time as a volunteer medic, prepares his equipment the night before an expected protest the following day in Hong Kong. - The 29-year-old, who asked just to use his first name, watched the first huge protest march on June 9 last year on television when he got back from work and three days later was outside the city's legislature helping protesters struck by tear gas and rubber bullets. (Photo by Anthony WALLACE / AFP) / TO GO WITH HongKong-China-politics-unrest-anniversary-medic by Yan ZHAO (Photo by ANTHONY WALLACE/AFP via Getty Images)

In this picture taken on May 25, 2020, 29-year-old Nok, who quit his nursing job to join the city's pro-democracy protests full-time as a volunteer medic, prepares his equipment the night before an expected protest the following day in Hong Kong. - The 29-year-old, who asked just to use his first name, watched the first huge protest march on June 9 last year on television when he got back from work and three days later was outside the city's legislature helping protesters struck by tear gas and rubber bullets. (Photo by Anthony WALLACE / AFP) / TO GO WITH HongKong-China-politics-unrest-anniversary-medic by Yan ZHAO (Photo by ANTHONY WALLACE/AFP via Getty Images)