The Christian Democrats (DC) were instrumental in the Italian Socialist Party (PSI) gaining power in the 1960s and they created a coalition. The assassination of the Christian Democrat leader Aldo Moro in 1978 ended the strategy of "historic compromise" between the DC and the Italian Communist Party (PCI). The assassination was carried out by the Red Brigades, then led by Mario Moretti. Between 1968 and 1988, 428 murders were attributed to political violence in the form of bombings, assassinations, and street warfare between rival militant factions.