Peace Mural Starts Artists's War -- A Detail from "Nightmare Of War And Dream Of Peace" by Diego Rivera. This is the section considered Most Of fensive to friendly Nations. The white haired man at the bottom is General Jara, A Mexican, Winner of the 1950 Stalin peace prize. The men on Gibbets are Koreans. The Celebrated Mexican artist Diego Rivera was commissioned by his country's fine arts institute to paint a Mural to be sent to Paris as a Mexican art Exhibit. He Chose his theme and worked day and night to meet the deadline set him. May 21, 1952. (Photo by Paul Popper).