Tupamaros Guerrillas
An urban guerrilla movement known as the Tupamaros formed in the early 1960s, first robbing banks and distributing food and money in poor neighborhoods, then undertaking political kidnappings and attacks on security forces. Their efforts succeeded in first embarrassing, and then destabilizing, the government.
The US Office of Public Safety (OPS) began operating in Uruguay in 1965. The US OPS trained Uruguayan police and intelligence in policing and interrogration techniques. The Uruguayan Chief of Police Intelligence, Alejandro Otero, told a Brazilian newspaper in 1970 that the OPS, especially the head of the OPS in Uruguay, Dan Mitrione, had instructed the Uruguayan police how to torture suspects, especially with electrical implements.
Read more about this topic: History Of Uruguay