In 1933,
Pridi Panomyong, by then a
Minister of State, presented his Draft Economic Plan or
Yellow Cover Dossier to King Prajadhipok. The dossier was an economic plan, which advocated
socialist solutions to the country's many financial and economic problems. Prajadhipok even branded the dossier "communist" and attacked Pridi publicly about it. When Pridi's dossier was rejected, his status fell and caused a major disruption among the members of People's Party and the People's Committee itself. Phraya Mano rallied those who opposed the socialist plan of Pridi including
Phraya Songsuradet and dissolved his own cabinet to oust Pridi, who had great support within the People's Party. To regain some stability and silence domestic critics, Phraya Manopakorn had some articles in the constitution suspended. Manopakorn barred the People's Assembly from any further meetings and the
judiciary was shut down. Pridi was forced to flee to
France. It was said that Manopakorn "led the coup with his pen", this event is known in Thailand as the "April 1933 Coup" (or the "Silent Coup") (
Thai: รัฐประหารในประเทศไทย เมษายน พ.ศ. 2476). Phraya Manopakorn then approved the Anti-Communist Act, which empowered him to arrest those suspected of having communist sentiments: the entire Central Committee of the
Communist Party of Siam was arrested and imprisoned. After the Yellow Dossier Incident, the degree of political freedom was greatly reduced by Phraya Manopakorn's policies. He censored many leftist activities including shutting down
newspapers and
publications. However the People's Party, which gave him the premiership, would eventually be his downfall. On 16 June,
Phraya Pahol Polpayuhasena, the country's most powerful military leader and member of the People's Party, together with three other senior officers retired from the People's Committee, for "health reasons". ==Death and legacy==