Starting in 1976, the juntas led by Videla until 1981, and then by Roberto Viola and Leopoldo Galtieri, were responsible for the illegal arrest, torture, killing or forced disappearance of thousands of people, primarily trade unionists, students and activists. Videla's dictatorship referred to its systematized persecution of the Argentine citizenry as the "National Reorganization Process".
Up to 30,000 people "disappeared" during this time. Argentine security forces and death squads worked hand in hand with other South American dictatorships in Operation Condor. An Argentine court would later condemn the government's crimes as crimes against humanity and genocide.