A Hong Kong court convicted two activists who organized annual vigils marking China’s deadly Tiananmen crackdown of “incitement to subversion” on Aug. 21, with rights groups condemning the silencing of free speech.

Two former organizers of Hong Kong’s decades-old vigil in remembrance of the 1989 Tiananmen Square crackdown have been convicted in a national security case.

Two former organizers of Hong Kong’s massive vigils to remember the 1989 Tiananmen Square crackdown will hear their verdict on Friday, in a national security trial under a…