sh artists Pablo Picasso and Juan Gris who were experimenting with cubism. Cubist techniques such as the use of a diagonal grid as the basis of large-scale organization flourish in the works of Rivera and the other Mexican muralists.
             Rivera also drew on pre-Columbian sources and the traditions of Mexican Folk art in murals that he did for the National Palace in Mexico City (1930-32). He, as well as other muralists, expressed solidarity with the working and farming classes and shared the obsession with non-European aspects of Latin American culture that characterized the indigenism movement. These moments also inspired photography and the graphic arts toward social realism, or the depiction of the common people in a politically charged context. Siqueiros and Orozco also painted emotionally charged murals expressing their sympathy with workers and their opposition to political oppression in portrayals of Mexican history.
             Mexican muralists came to prominence during the cultural revival in Mexico stemming from the Mexican Revolution. General Alvaro Obregón, who was one of the many Revolutionary leaders struggling for power after the war, helped establish a political and social environment for the muralists to emerge. This environment included many revolutionary ideals, such as land reform, civil liberties, welfare,
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