the party suffered a major split in august 1919, when a dissident group formed the jewish communist party (poalei zion). after the jcp(pz) had merged into the communist party in 1922, the jsdlp(pz) changed name to the jewish communist labour party (poalei zion) (known by its yiddish acronym א.ק.א.פ. (פועלי ציון)). its yiddish organ, "der proletarisher gedank" ('proletarian thought'), was published from moscow 1926-1927, replacing its moscow central russian organ "evreiskaya proletarskaya mysl" ('jewish proletarian thought', 1920-1926). the 12th conference of the party was held in moscow march 11–18, 1926. the party opposed the policy of regionalization of the soviet union. the party was completely banned and dissolved in 1928 when most of its member either joined the communist movement or quit the party.