Diego Rivera, who was a member of the Mexican Communist Party and "a supporter of the revolutionary cause," claims that the art for the sake of art theory would further divide the rich from the poor. Rivera goes on to say that since one of the characteristics of so called "pure art" was that it could only be appreciated by a few superior people, the art movement would strip art from its value as a social tool and ultimately make art into a currency-like item that would only be available to the rich.