As commemorations for the 30th anniversary of the Tiananmen Square massacre take place worldwide Tuesday, any coverage or discussion of the event will be tightly censored in China. Hundreds of people were killed on June 4, 1989, as People's Liberation Army troops cracked down on pro-democracy protesters in and around Beijing's Tiananmen Square. Events will be held and speeches made to commemorate the massacre and those who died in cities around the world.
