''Movimiento de Agrupaciones Obreras'' ('Workers Groups Movement', abbreviated MAO) was a political labour organization in Argentina. MAO was founded in mid-1957 by a

Nahuel Moreno Nahuel Moreno (real name Hugo Miguel Bressano Capacete; April 24, 1924 – January 25, 1987) was a Trotskyism, Trotskyist leader from Argentina. Moreno was active in the Trotskyist movement from 1942 until his death. Biography 1950s–1960s Durin ...

Trotskyist Trotskyism is the political ideology and branch of Marxism developed by Ukrainian-Russian revolutionary Leon Trotsky and some other members of the Left Opposition and Fourth International. Trotsky self-identified as an orthodox Marxist, a ...

tendency (which had been organized in the Revolutionary Workers Party, POR, until that party had merged into the Socialist Party of the National Revolution in 1954). MAO formed part of the trade unionist resistance to the '' Revolución Libertadora''.Biagini, Hugo E., Arturo Andrés Roig, and Carlos Alemián.
El pensamiento alternativo en la Argentina del siglo XX
'. Buenos Aires: Editorial Biblos, 2004. p. 301 On July 23, 1957, MAO began publishing the weekly newspaper ''Palabra Obrera'' ('Workers Word'). The organization became commonly known by the name of its publication.''Un siglo de luchas: historia del movimiento obrero argentino''. Buenos Aires: Ediciones Antídoto, 1988. pp. 122-123http://www.razonyrevolucion.org/textos/revryr/luchadeclases/ryr3Camarero.pdf Through MAO, Moreno's group sought to practice

entryism Entryism (also called entrism, enterism, or infiltration) is a political strategy in which an organisation or state encourages its members or supporters to join another, usually larger, organization in an attempt to expand influence and expand the ...

in the Peronist movement. MAO was disbanded in the early 1960s.

References

Trade unions in Argentina Trotskyist organisations in Argentina Trade unions established in 1957 {{argentina-org-stub