Tupamaros, also known as the MLN-T (Movimiento de Liberación Nacional – Tupamaros or Tupamaros – National Liberation Movement), was a left-wing urban guerrilla group in Uruguay in the 1960s and 1970s. The MLN-T is inextricably linked to its most important leader, Raúl Sendic, and his brand of social politics. José Mujica, who later became President of Uruguay, was also a member.