A look back at the enactment of national security law in Hong Kong ahead of an expected ruling in the city's largest case against a group of pro-democracy activists facing up to life in prison if convicted. Three High Court judges are expected to take up to two days to deliver the verdict, capping off a trial that began 15 months ago. Beijing imposed a national security law on Hong Kong in 2020 after the finance hub saw huge and sometimes violent pro-democracy protests the year before. A RECAP OF RECAP OF NATIONAL SECURITY LAW ENACTMENT, PROTESTS AND ARRESTS IN HONG KONG