Mexican Muralism got its start in the early 1920s when, in an effort to increase literacy, Mexican Education Minister José Vasconcelos commissioned artists to create didactic murals depicting Mexico’s history on the walls of government buildings. Artists of the Mexican mural movement include José Clemente Orozco, Diego Rivera, and David Alfaro Siqueiros. Web resource here.

David Alfaro Siqueiros. From the Dictatorship of Porfirio Díaz to the Revolution: The Revolutionaries. 1957-1965. Acrylic on plywood, Hall of the Revolution, National History Museum, Chapultepec Castle, Mexico City.