Complex sentence: As other similar left-wing guerrillas that operated in Latin America during the 1970s, they maintained that democracies were actually a complex masquerade that concealed fascist governments and delayed class struggle.
Split into simpler sentences: As other similar left-wing guerrillas that operated in Latin America during the 1970s. They maintained that democracies were actually a complex masquerade that concealed fascist governments and delayed class struggle.