John D. Rockefeller Jr., a businessman and member of the Rockefeller family, was heavily involved in the 1930s construction of Rockefeller Center. He wanted to have a mural placed on the lobby wall of the RCA Building (now 30 Rockefeller Plaza), the largest structure in Rockefeller Center. Meanwhile, his wife, Abby Aldrich Rockefeller, was a patron of the socialist Mexican artist Diego Rivera. This had been the case since winter 1931–1932, when Abby purchased many of Rivera's pieces at a Museum of Modern Art (MoMA) show. At the time, Rivera was painting a controversial fresco in Detroit titled "Detroit Industry", commissioned by the Rockefellers' friend, Edsel Ford, who later became a MoMA trustee. Rivera had recently been kicked out of Communist Party USA for accepting commissions from wealthy patrons, and his commission for "Detroit Industry" did not help improve the Communist Party's views of him.