Rivera was inspired by the worker uprisings of the Mexican Revolution (1914-15) and the Russian Revolution (1917), believing that art should participate in educating working people in their own histories.
Rivera studied Renaissance frescos while traveling through Italy in 1920. Returning to Mexico a year later, Rivera began creating his own style of public painting based on his Italian experience.
Rivera painted in fresco-style, using a watercolor medium to layer colors onto damp plaster, which absorbed the pigment to form a calcium carbonate film resistant to water and light.
Rivera selected the undecorated walls of Mexico's government edifices as the template upon which he would write the people's history.
Rivera was aware that he was working in the tradition of his Aztec and Mayan predecessors, whose bright colors adorned the walls of their temples and tombs.