Despite the diminished threat, the civilian government of Juan María Bordaberry ceded government authority to the military in July, 1973 in a bloodless coup that led to further repression against the population and the suppression of all parties.
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Nonetheless, the movement was hampered by a series of events including important strategic gaffes and the betrayal of high-ranking Tupamaro Héctor Amodio Pérez, and the army's counteroffensive, which included the Escuadrón de la Muerte (Death squad), police officers who were granted repressive powers to deal with Tupamaros.
1963 was perhaps a decisive year, when the Tupamaros robbed an arms shop in Colonia to found a guerrilla movement.
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Nonetheless, the movement was hampered by a series of events including serious strategic gaffes and the betrayal of high-ranking Tupamaro Héctor Amodio Pérez, and the army's counteroffensive, which included the Escuadrón de la Muerte ("Death Squad"), police officers who were granted liberal repressive powers to deal with Tupamaros.