the fedaian guerrillas were a marxist- leninist organization formed in the 1960s to fight the us backed government of pahlavi. at that point of time, iran was a monarchy adopting capitalism as its economic system. oipfg participated in the iranian revolution in 1979. however, in the early 1980s the majority of its members were either imprisoned by ayatollahs or executed. the party then split into two fractions: the majority (the defenders of revolution) and the minority (anti ayatollahs communists).