Tiradentes Revolutionary Movement (1961–1962)
The Tiradentes Revolutionary Movement (MRT) was a clandestine political group linked to the Peasant Leagues and disbanded in 1962. Under the influence of the Cuban Revolution, and together with members of the Leagues, it aimed at a socialist revolution with peasant bases in Brazil.
Source: Wikipedia — Tiradentes Revolutionary Movement (1961–1962) (CC BY-SA 4.0)