What devices or techniques do the artists and designers employ to communicate and convey messages in the revolutionary, socialist, or communist artwork?

0.1 [Assignments] Mexican Muralists and Jacob Lawrence Instructions Enlarge Image +Diego Rivera, Flower Carrier, 1935, San Francisco Museum of Modern Art Enlarge Image + José Clemente Orozco, The Trench, 1926–7, fresco at the National Preparatory School, Mexico City Enlarge Image + D. Rivera, Zapata, 1932, lithograph, Museum of Modern Art, New York Enlarge Image + […]