Miguel Enríquez in January 1964 amid a stormy National Convention held in the southern city of Concepción. Senator Raúl Ampuero - the national chairman of the party - had long been dealing with Enríquez's public criticism of a party strategy characterised as "reformist" and alien, according to Enríquez, to the working classes' interest. Chairman Ampuero, supported by a majority of the convention delegates, proceeded to marginalize Enríquez and his closest colleagues of the Spartacus cell from the Socialist Party, some of them in strategic leading positions inside the "Comité Regional de la Juventud Socialista". Miguel Enríquez was then 21 years old. In fact, Miguel had already organized (1963) a clandestine fraction called "Movimiento Socialista Revolucionario", or "MSR", integrated by a handful of his peers and his two elder brothers Marco Antonio and Edgardo Enríquez. Edgardo had had the task of developing the MSR fraction at the Socialist Party in Santiago. After the events of February 1964 in Concepción, this entire group, together with other small forces mainly from Santiago de Chile, entered the short-lived political group called "VRM". During the VRM-period (1964–1965) some few new cadres - each of them with previous experiences in other political organizations - were recruited by Miguel's group. Among them Luciano Cruz Aguayo, Sergio Pérez Molina, Jorge Fuentes (nickname Trotsko), Edgardo Condeza, Juan Saavedra Gorriategy, Máximo Jara, and Horacio Vergara Mehrson. All of whom, together with old-timers Marcello Ferrada de Noli, Bautista Van Schowen Vasey, Jorge Gutiérrez Correa, and his brothers Edgardo and Marco A., formed Miguel Enríquez first VRM-group in Concepción, the embryo of MIR. The foundation of MIR took place in August 1965, in a constituent assembly held at the Chilean Anarchist's facilities in Santiago and in which less than a hundred persons participated, mainly from Concepción and Santiago. Here Luciano Cruz participated also for the first time together with Enríquez as militants of the same political organization. The document "La conquista del poder por la vía insureccional" ("the conquest of power through insurrection") with the first political-military theses of MIR and which was elaborated by Miguel Enríquez ("Viriatto"), his brother Marco Antonio ("Bravo") and Marcello Ferrada de Noli ("Atacama") was approved by the foundation congress. Miguel was then elected a member of the new organization's Central Committee, however he became officially MIR's chairman only in 1967. In this post as political leader MIR Miguel Enríquez remained until his death, when he was