Carlos Lamarca leads the first urban guerrilla action against the military dictatorship of Brazil in São Paulo, by robbing two banks.

Carlos Lamarca was a Brazilian Army Captain who deserted to join the armed struggle against the Brazilian military dictatorship. He was part of the Popular Revolutionary Vanguard and became, along with Carlos Marighella, one of the leaders of the armed struggle. Such groups were armed chiefly for self-protection from the right-wing dictatorship that unleashed state terrorism against any who opposed their regime, including students, the clergy, and the children of those who called for democracy. The kidnappings by a few armed groups were conducted to free comrades suffering extremely brutal torture in Brazil's prisons.