Diego Rivera, 1934. Rockefeller Center mural famously destroyed for including Lenin; recreated in Mexico City.
From Wikipedia
Man at the Crossroads (1933) was a fresco by Mexican painter Diego Rivera. Originally slated to be installed in the lobby of the RCA Building at Rockefeller Center in New York City, the fresco showed aspects of contemporary social and scientific culture. As originally installed, it was a three-paneled artwork. A central panel, depicting a worker controlling machinery, was flanked by two other panels, The Frontier of Ethical Evolution and The Frontier of Material Development, which respectively represented socialism and capitalism.