In its denial of conventional disciplinary boundaries, this influential event set a pattern for Happenings and Fluxus activities and offered an impetus for a lot of the reside art of the next decade. In the Sixties and ’70s, efficiency art was characterized by improvisation, spontaneity, audience interaction, and political agitation. It additionally turned a favorite technique of feminist artists—such as the gorilla-masked Guerrilla Girls, whose mission was to expose sexism, racism, and corruption mainly Art & Music in the art world—as nicely as of artists elsewhere in the world, such as the Chinese artist Zhang Huan. Popular manifestations of the genre can be seen in Blue Man Group and such events as the Burning Man pageant, held annually in the Black Rock Desert, Nevada. Performance art arose within the early Seventies as a basic time period for a multitude of activities—including Happenings, body art, actions, occasions, and guerrilla theatre.