The military government which ruled Argentina between 1966 and 1973 saw the growing activities of groups such as Montoneros and the ERP , and also a very important social movement . During Héctor Cámpora 's first months of government , a rather moderate and left-wing Peronist , approximatively 600 social conflicts , strikes and factory occupations had taken place . Following the June 20 , 1973 Ezeiza massacre , left and right-wing Peronism broke apart , while the Triple A death squad , organized by José López Rega , closest advisor to María Estela Martínez de Perón , started a campaign of assassinations against left-wing opponents . But Isabel Perón herself was ousted during the March 1976 coup by a military '' junta ''
Ezeiza massacre
Ezeiza massacre
Argentine Army