"Siqueiros and Rivera were both painters known for their murals. Siqueiros established "Mexican Muralism." Rivera helped with the Mexican Mural Movement
David Alfaro Siqueiros (born José de Jesús Alfaro Siqueiros, December 29, 1896, in Chihuahua – January 6, 1974, in Cuernavaca, Morelos) was a Mexican social realist painter, better known for his large murals in fresco. Along with Diego Rivera and José Clemente Orozco, he established "Mexican Muralism.""