Pattsi Valdez, member of artist group Asco, stands on the Los Angeles County Museum of Art, above the wall of the building where two fellow Asco members, Willie F. Herron III, Gronk and Harry Gamboa Jr., had spraypainted their names the night before in defiance of the LACMA director, who had rejected their idea for an exhibit and told them that Chicanos create graffiti, not art.