David Alfaro Siqueiros, born in Chihuahua, Mexico, joined Jose Orozco and Diego Rivera as  most influential muralists.the 20th Century's They revolutionized mural content and style by portraying Mexico's rich history and contemporary economic problems in visually bold political terms. Of the three, Siqueiros was the most influenced by Marxism, as evident by his treatment of the class struggle and his use of modern industrial equipment, such as the airbrush.and peroxilin paint.