Source: WTL digital photograph in front of the Palacio de Bellas Artes, Mexico City.
Comments: Now standing squarely in front of the mural's right side (to the Man's left), we see the side of the workers featuring Karl Marx, Engels, Leon Trotsky, and Bertram D. Wolfe, Rivera's American friend, patron, biographer, and art critic. The red banner toward the bottom announces the formation of the IV International in opposition to the Soviet Communist Party and Stalin. This side of the mural, the "leftist side" gives the feeling of the churning masses who are opposed to Nazism, which is symbolized in the giant, but faded statue.