After Juan Perón 's return from 20 years of exile and the June 20 , 1973 Ezeiza massacre , which marked the definitive split between left and right-wing Peronism , the Montoneros were expelled from the Justicialist party in May 1974 by Perón . The group was almost completely dismantled in 1977 , during Jorge Rafael Videla 's dictatorship
Ezeiza massacre
Ezeiza massacre
Funny Dirty Little War