David Alfaro Siqueiros ( December 29 , 1896 in Camargo , Chihuahua , Mexico - January 6 , 1974 in Cuernavaca , Morelos , Mexico ) was a famous painter and muralist . JosÃ David Alfaro Siqueiros ( December 29 , 1896 in Camargo , Chihuahua , Mexico - January 6 , 1974 in Cuernavaca , Morelos , Mexico ) was a social realist painter , known for his large murals in fresco that helped establish the Mexican Mural Renaissance , together with works by Diego Rivera and JosÃ Clemente Orozco , and also a Stalinist who participated in an unsuccessful attempt to assassinate Leon Trotsky in May 1940 . Siqueiros was born the second of three children in Chihuahua , Mexico , in 1896 .