In the fourth chapter, "Dangerous Times", Chomsky focuses primarily on U.S. interventionism throughout Latin America, which the government has defended through its Monroe Doctrine. He discusses the U.S. campaign to topple the socialist government of Fidel Castro in Cuba, highlighting both its economic embargo of the island and its financial backing for militant groups that attack Cuban targets, including the perpetrators of the Bay of Pigs invasion and the bombing of Cubana Flight 455. He furthermore discusses the U.S. government's role in training Latin American right wing paramilitary squads, who have perpetrated widespread human rights abuses across the region.[14]