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19th of April Movement

Colombian guerrilla

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 5, 2026
Entity authorityQ1789014 ↗
Source-derived summary

The 19th of April Movement (Spanish: Movimiento 19 de Abril), or M-19, was a Colombian urban guerrilla movement active in the late 1970s and 1980s. After its demobilization in 1990, it became a political party, the M-19 Democratic Alliance (Alianza Democrática M-19), or AD/M-19.

The M-19 traced its origins to the allegedly fraudulent presidential elections of 19 April 1970, where the left-wing populist National Popular Alliance (ANAPO) of former military dictator Gustavo Rojas Pinilla was defeated by the National Front, a power sharing coalition of the two main establishment parties. M-19 initially proclaimed itself the armed wing of ANAPO, though party leaders denied any association.

The ideology of the M-19 was revolutionary nationalism and democratic socialism, but it claimed its main aim was to open up electoral democracy in Colombia. It was inspired by other South American urban guerrilla groups, such as the Tupamaros in Uruguay and the Montoneros in Argentina. At its height in the mid-1980s, the M-19 was the second largest guerrilla group in Colombia (after the FARC), with the number of active members estimated at between 1,500 and 2,000. Its actions during this period included the theft of Bolívar's sword as well as the Palace of Justice siege. M-19 had 30% women among its members.

The group demobilized in the late 1980s and transitioned to electoral politics, though many of its key leaders would be assassinated by government agents and right-wing paramilitary groups.

Editorial summary

Begin with the source’s own compact description: “19th of April Movement” is colombian guerrilla. The dossier treats that line as a proposition to test through 19th, April and Movement, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1990, 1970—that can be checked directly. The linked authority record independently contributes the date 1970-01-01. For this dossier, 19th, April and Movement is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “colombian guerrilla” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 5, 2026. The linked authority identifier is Q1789014. VIAF identifies the subject as 125844226. The Library of Congress control number is n80162352. 1 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1990 and 1970.

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Source & attribution

This entry incorporates text from “19th of April Movement” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.