Liga Comunista 23 de Septiembre

September 23rd Communist League
Liga Comunista 23 de Septiembre
Madera, newsletter of the LC23S
Leaders	Ignacio Arturo Salas Obregón (1973-1974) † David Jimenez Sarmiento (1974-1976) † Luis Miguel Corral García (1976-1977) † Miguel Ángel Barraza García (1977-1981) † Coordinación Nacional Provisional (1981-1982)
Dates of operation	1973–1983
Headquarters	Guadalajara, Jalisco (1973-1974) Ciudad de México (1974-1982)
Ideology	Marxism–Leninism
Political position	Far-left
Status	Inactive
Allies	Unión del Pueblo (UP) Fuerzas Revolucionarias Armadas del Pueblo (FRAP)
Opponents	Mexican Army Institutional Revolutionary Party Dirección Federal de Seguridad Brigada Especial
Battles and wars	the Dirty War (Mexico)
Preceded by *Los Procesos Los Lacandones Los Macias Los Guajiros Los Procesos Frente Estudiantil Revolucionario (FER) Los Enfermos (the sick ones) MAR-23 Grupo 23 de Septiembre Succeeded by *Corriente Socialista

The Liga Comunista 23 de Septiembre (English: September 23rd Communist League), or LC23S, was a Marxist-Leninist urban guerrilla movement that emerged in Mexico in the early 1970s. The result of the merging of various armed revolutionary organizations active in Mexico prior to 1974, with the objective of creating a united front to combat the Mexican government; the name was chosen to commemorate an unsuccessful guerrilla assault on the barracks of Ciudad Madera in the northern state of Chihuahua led by former schoolteacher Arturo Gámiz and the People's Guerrilla Group on September 23, 1965. The LC23S' militancy was made up mainly of young disenfranchised university students who saw any opportunity of a peaceful political transformation die in the aftermath of the 1968 student movement and then to be buried in the violent crackdown of 1971. Its long term objective was the “elimination of the capitalist system and bourgeois democracy, which would be replaced by a socialist republic and the dictatorship of the proletariat”.^[1]

Labeled a terrorist organization by the Mexican authorities, the LC23S engaged in numerous violent attacks, both against what they considered their "class enemy" (the bourgeoisie) and the authoritarian government of the Institutional Revolutionary Party (PRI). At that point, this party had held the presidency for more than 40 years since the end of the Mexican Revolution and, through acts of political corruption, co-opting of opposition and violent repression, had eliminated most political dissent. Although the League saw itself as the vanguard of the proletariat, it never really penetrated the minds of the workers or peasants. Hundreds of young militants died during that time, with many more still considered missing.^[2] Without having a social base in the workers' sphere and with a disbandment of militants who saw an opportunity of activism in the aftermath of the new legal framework, the September 23rd Communist League disappeared at the beginning of the eighties.