Mexican painter, the central figure of the muralismo movement that, from the early 1920s, made public wall painting the dominant form of Mexican art and one of the most ambitious attempts in the 20th century to give a political argument the scale and publicness of medieval fresco. With José Clemente Orozco and David Alfaro Siqueiros — los tres grandes — Rivera made Mexican mural painting an international reference point for a politically engaged modernism that remained legible to ordinary viewers.
After a long European formation — Spain from 1907, Paris from 1909, a decade inside Cubism, then a turn toward Giotto and the Italian Renaissance on a trip through Italy in 1920–21 — Rivera returned to Mexico in 1921 at the invitation of the post-Revolutionary Minister of Education José Vasconcelos, who commissioned the murals that became the first major cycle. The canonical programs followed: the National Preparatory School (1923); the vast stair- and corridor-decoration at the Ministry of Public Education, Mexico City (1923–28); the agricultural-revolutionary murals at the National Agricultural School, Chapingo (1924–27); the History of Mexico cycle in the National Palace (1929–35, with later additions); the Detroit Industry frescoes for Edsel Ford at the Detroit Institute of Arts (1932–33); and Man at the Crossroads for Rockefeller Center in New York (1933–34), destroyed by the Rockefellers after Rivera refused to remove a portrait of Lenin. A reconstructed version, Man, Controller of the Universe (1934), hangs at the Palacio de Bellas Artes.
Rivera was a Communist Party member intermittently from the 1920s; sheltered Trotsky in Mexico at Frida Kahlo's house in 1937–39 after his own expulsion from the Party; rejoined later in life. The political content of his work is explicit — indigenous labor and the pre-Columbian world, the Conquest and colonial exploitation, the Revolution and its betrayal, industrial capitalism and the possibility of its supersession — but it is also formally ambitious in ways the standard summary of "socialist realism" does not capture: the Detroit cycle in particular is one of the major works of 20th-century industrial imagery, more sympathetic to the beauty of mass production than his own politics should strictly have allowed.