The Cambodian authorities have blocked a new documentary that indicts the government in the assassination of an outspoken trade union leader. Who Killed Chea Vichea? argues that Vichea, who championed better pay and working conditions for local factory workers, could not have been killed without the cooperation of Cambodia’s political elites. Two men, sentenced to 20 years imprisonment for Vichea’s murder, were released in 2004 but remain on bail.