José Clemente Orozco was one of a trio of painters of the Mexican Mural Movement, called Los Tres Grandes (The Three Great Ones), the others being Diego Rivera and David Alfaro Siqueiros. Known for his bleak view of history, his murals are often bitter condemnations of human barbarity. He studied painting at the Academy of San Carlos, and in 1923 Minister of Education Jose Vasconcelos commissioned him to paint murals at the Escuela Preparatoria Nacional (National Preparatory School); these focused on Mexican history, including the Conquest of Mexico and the Mexican Revolution.