Hence, Sendic began to think that the only option for the country was terrorist violence that should complement the workers' requests. In 1963, the Tupamaros robbed an arms shop in Colonia to found a guerrilla movement. However, the MLN-T began to be recognised because of its activities only in 1967, when government repression, during the presidency of Jorge Pacheco Areco, caused the mobilization and response of a variety of groups, principally the Tupamaros.