Also known as Majlis Sjuro Muslimin Indonesia (Consultative Council of Indonesian Muslims). One of Indonesia's main political parties during the period of parliamentary democracy in the 1950s. Founded in 1945 shortly following independence. All major Indonesian Muslim organizations joined. Masjumi constituted a major Muslim force in the new republic. As a Muslim party, it called for the establishment of an Islamic state and the obligation for Muslims to observe Islamic law. It participated in most governments from 1950 to 1957, though it suffered from internal rivalries. The party participated in a regional revolt in the mid-1950s, earning it the distrust of the military leadership under President Sukarno. It defended parliamentary democracy, opposing the Sukarno government's “guided democracy.” Masjumi was banned in 1960 and its main leaders detained. It was later reformed as the Partai Muslimin Indonesia, but without the old leaders.