During the war against communism, the CIA supported governments and groups against leftist rebels.
It also participated in coups such as the 1973 coup against Chile’s socialist President Salvador.
The CIA’s effort to overthrow Fidel Castro’s Cuban communist regime in 1961 culminated in the Bay of Pigs invasion. The CIA trained Cuban exiles to rid Fidel from power but in failure the agency was exposed and Castro remained.
One of the most controversial US involvements was the Iran-Contra Affair, where Nicaraguan rebels were backed by the US and funded by profits made from selling weapons to Iran.
The US has funded the Colombian government to the tune of billions of dollars in its fight against FARC and the drug war.