Libertemos los presos políticos del 1º de mayo 1952 (Let Us Free the Political Prisoners of May 1, 1952) Artist: Francisco Mora (Mexican, 1922–2002)
Publisher: Taller de Gráfica Popular (Mexico City, founded 1937)


Prints and Drawings

The 1952 annual march on International Workers’ Day turned bloody when plainclothes policemen fired into the demonstrators, setting off a riot that resulted in three hundred arrests. Those targeted were members of unions and political parties who had resisted affiliating themselves with the government. In this poster, a near life-size man stands in front of the main text, which reads like an extension of the banners waving in the background. His outstretched hand urges the viewer to join the cause. Rather than illustrating the arrests that the poster condemns, Francisco Mora created an image that taught the viewer how to react to such events, and implied that others were already doing the same.




platemark: 20 1/2 × 33 7/16 in. (52 × 85 cm)
sheet: 26 3/4 × 37 in. (67.9 × 94 cm)

Credit Line

Gift of Monroe E. Price, B.A. 1960, LL.B 1964, and Aimée Brown Price, M.A. 1963, Ph.D. 1972

Accession Number



20th century


Note: This electronic record was created from historic documentation that does not necessarily reflect the Yale University Art Gallery’s complete or current knowledge about the object. Review and updating of records is ongoing.

  • Michael Ricker et al., El Taller de Gráfica Popular: Vida y Arte, exh. cat. (Athens, Ga.: Georgia Museum of Art, University of Georgia, 2015), 204, ill
  • "Acquisitions," Yale University Art Gallery Bulletin: Online Supplement (accessed December 21, 2012), 74, ill
  • Dawn Ades et al., Revolution on Paper: Mexican Prints, 1910–1960, ed. Mark McDonald, exh. cat. (Austin, Tex.: University of Texas Press, 2009), 149, no. 80
  • Humberto Musacchio, El Taller de Gráfica Popular (Mexico City: El Fondo de Cultura Economica, 2007), 195, ill
  • Helga Prignitz, El Taller de Gráfica Popular en México, 1937–1977 (Mexico City: Instituto Nacional de Bellas Artes, 1992), 324, no. 152
Object copyright
Additional information

Object/Work type

figures (representations), linocuts, political art, words, numbers, symbols art (visual works)


Nothing on verso\r\nInscribed in plate, UC: "LIBERTEMOS / A LOS PRESOS POLITICOS / DEL / 1º DE MAYO-1952 / EXIGIMOS RESPETO / A LA LIBERTAD DE PENSAMIENTO / A LAS GARANTIAS INDIVIDUALES! / RESPETO A LOS DERECHOS DEL HOMBRE" (= Let Us Free the Political Prisoners of May 1, 1952. We are demanding respect for the freedom of thought, for individual rights. Respect for human rights.); LC: "FRENTE NACIONAL PROLETARIO DE DEFENSA DE LOS PRESOS Y PERSEGUIDOS POLITICOS. - AGOSTO DE 1953. - NETZAHUALCOYOTL No. 9 - MEXICO D.F." (= National Proletarian Front for the Defence of Political Prisoners and Politcally Persecuted Persons - August 1953 - NETZAHUALCOYOTL No. 9 - MEXICO D.F.).


recto, LL, in plate: TGP Mora

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