Following the Mongolian Revolution of 1921, infighting within the ruling Mongolian People's Revolutionary Party (MPRP) resulted in several waves of violent political purges, often instigated and aided by Comintern or Soviet agents and government advisors. In August 1922, Dogsomyn Bodoo, the first prime minister of the revolutionary period, and 14 others were executed without trial after confessing under torture by Soviet agents to conspiring to overthrow the government. Two years later Bodoo's chief accuser, Soliin Danzan, was executed during the Third Party Congress for representing "bourgeois interests". In 1928, several prominent MPRP members including Ajvaagiin Danzan, Jamsrangiin Tseveen, Tseren-Ochiryn Dambadorj, and Navaandorjiin Jadambaa, were imprisoned or exiled in a widescale purge of suspected rightwingers as the country launched its "Leftist Period" of more rapid collectivization, land expropriation, and persecution of the Buddhist Church. After those drastic measures resulted in popular uprisings throughout the country in 1932, several of the MPRP's most hard-line leftists including Zolbingiin Shijee, Ölziin Badrakh, and Prime Minister Tsengeltiin Jigjidjav were blamed, officially expelled from the party, and later executed during the Great Repression.