The plaza has frequently been used for rallies organised by the government or palace as well as civil protests throughout the Thai history . On 6 October 1976 , the day of Thammasat University massacre , some 30,000 adherents of the right-wing Village Scouts movement rallied here , calling to " Kill the communists , kill the three leftist ministers , defend nation — religion — monarchy " , until they were dispersed by then Crown Prince Vajiralongkorn after the military had seized power . The Royal Plaza was also one of the sites of the May 1992 mass protests against a purportedly illegitimate government , that led into the violent " Black May " unrest . In February 2006 tens of thousands supporters of the People 's Alliance for Democracy ( also known as " yellow shirts " ) gathered to protest against Prime minister Thaksin Shinawatra . In June of the same year , up to a million Thai subjects assembled here to celebrate the diamond throne jubilee of King Bhumibol Adulyadej
Thammasat University massacre
Thammasat University massacre
Royal Plaza (Bangkok)