After three years of civilian rule following the October 1973 popular uprising , at least 46 leftist students and activists who had gathered on and around Bangkok 's Thammasat University campus were massacred by police and right-wing paramilitaries on 6 October 1976 . They had been accused of supporting communism . The mass killing followed a campaign of violently anti-communist propaganda by right-wing politicians , media and clerics , exemplified by the Buddhist monk Phra Kittiwuttho 's claim that killing communists was not sinful
Thammasat University campus were massacred
Thammasat University massacre
Anti-communist mass killings