Mauricio is one of the most significant oppositors to the chilean military dictatorship first and, later, to the "democratic" transition guided by the same dictator Pinochet (until his death).
Case Background:
In 1976, during the dictatorship, Mauricio was a Communist Party militant, while in 1983 he was one of the founders of the Manuel Rodríguez Patriotic Front (FPMR), an organization borned as the military organization of the Communist Party that later developed its own authonomy to fight and defeat the dictatorship on the military plan.