At the CrossroadsCollaborations during the Great Depression between the Mexican artist and Communist activist Diego Rivera and institutions in the United States and Mexico were fraught with risk, as the artist occasionally deviated from course, serving and then subverting his patrons. Catha Paquette investigates controversies surrounding Riveras retrospective at the Museum of Modern Art in New York City, his Rockefeller Center mural Man at the Crossroads, and the