A Hong Kong court jailed three activists who organised annual Tiananmen vigils for inciting subversion. The case sharpens concerns that peaceful democratic dissent is being criminalised in the city.

A Hong Kong court will sentence three Tiananmen vigil organisers in a national security case on Friday. The ruling is being watched as a test of how far dissent and democratic advocacy can survive in the city.

A Hong Kong court has sentenced three activists who for years organized vigils in remembrance of China’s 1989 Tiananmen Square crackdown to prison for terms ranging from 5 to over 7 years in prison in a case that is widely...