Dozens of prominent Hong Kong pro-democracy activists are scheduled to be sentenced Tuesday in the biggest case under a national security law that critics say has crushed political activism in the semi-autonomous Chinese city.

A Hong Kong court has sentenced dozens of pro-democracy leaders to years in jail for subversion, following a controversial national security trial. Benny Tai, 60, and Joshua Wong, 28, were among the so-called Hong Kong 47 group of activists and lawmakers who were involved in a plan to pick opposition candidates for local elections.