There were hot wars - with artillery and guns and bombs - and then there was the intentional mass murder of civilians for being leftist, or being accused of being leftist. The Jakarta Method is this tactic, that I believe is a misunderstood and underappreciated part of the construction of US hegemony - the intentional mass murder of leftists.
Writer Vincent Bevins on the USA's brutal campaign against Third World communists during the Cold War, the violence of subsequent regimes built on repression of the left and in service of US hegemony, and his book The Jakarta Method: Washington's Anticommunist Crusade and the Mass Murder Program that Shaped Our World from PublicAffairs.