M-19, Colombian Marxist guerrilla group that coalesced in 1973–74 and demobilized in 1990, transforming into a legitimate political party, Alianza Democrática M-19.
The group was founded by dissident members of the Gustavo Rojas Pinilla-led Acción Nacional Popular (Anapo), disaffected communists, and FARC guerrillas. Unlike other existing Colombian guerrilla groups, the M-19 was urban-oriented. The M-19 eschewed international (e.g., Soviet, Chinese, and Cuban) revolutionary models in favour of a socialist ideology grounded in Colombia’s own history. Its name was derived from the date of the 1970 presidential election, which the group asserted had been stolen from Rojas Pinilla.
The M-19 first gained national attention when its members stole a sword that had belonged to Simón Bolívar. The group frequently undertook audacious militant actions. In 1976, for example, it kidnapped and murdered a labour leader whom union groups had branded a traitor. On New Year’s Eve in 1978, members of the M-19 tunneled into a Bogotá arsenal of the Colombian army and stole weapons. In 1980 the group kidnapped guests attending a cocktail party at the embassy of the Dominican Republic in Bogotá.
In 1982 Colombian Pres. Belisario Betancur Cuartas, who came into office emphasizing his desire for peace with the country’s guerrillas, signed a law granting amnesty to almost all insurgents. Secret meetings between Betancur and the M-19 began in October 1983. In August 1984 the M-19 signed an agreement of “truce and national dialogue,” but in July 1985 the truce was broken and fighting resumed. In November M-19 guerrillas entered the Palace of Justice in Bogotá and took scores of hostages. When the military assaulted the building, some 100 people were killed, including half of Colombia’s Supreme Court justices.
Renewed negotiations with the government eventually led to the M-19 signing a peace agreement in March 1990 that resulted in demobilization. That April the group established a legitimate political party, Alianza Democrática M-19. In June 2022 former M-19 member Gustavo Petro was elected president of Colombia.