Background to the drug (Part )… KB Faced with this situation arise opposition groups, some of them peaceful, some of them armed, who established their political opposition to the system that the government was taking. First, the Liberal Revolutionary Movement (MRL), founded by Liberal Alfonso Lopez Michelsen, composed mainly of workers and liberal left.Moreover, there is the ANAP (National Association of People), founded by former President Gustavo Rojas Pinilla, years after his overthrow them, on his return from the Dominican Republic with the main purpose of competition to the National Front. Among the armed groups that emerged in the 60s, are, first, the FARC (Revolutionary Armed Forces of Colombia), which arise in the liberated zone of Marquetalia, Caldas, in 64, consisting mainly of members of CPP AUC, peasants against the government and workers left. The second group to emerge was the ELN (National Liberation Army), a group that emerged between 1964 and 1965 in the Santander, in sectors like La Fortuna and San Vicente de Chucuri, consisting of peasant and student followers of the Cuban revolution. The third group to emerge was the PLA, or PLA, which appears on the scene in 1967, in departments such as Cordoba, Bolivar, Sucre, Magdalena.Was formed mainly by supporters of communism who sought to continue the socialist ideal of the block. The latest guerrilla to emerge was the M-19, or 19th of April Movement, born in 1970 as a group of wealthy students from the capital against fraud in the presidential elections of that year.