The Youth International Party (YIP), whose members were commonly called Yippies, was an American youth-oriented radical and countercultural revolutionary offshoot of the free speech and anti-war movements of the late 1960s. It was founded on December 31, 1967. They employed theatrical gestures to mock the social status quo, such as advancing a pig ("Pigasus the Immortal") as a candidate for president of the United States in 1968. They have been described as a highly theatrical, anti-authoritarian and anarchist youth movement of "symbolic politics". Since they were well known for street theatre, protesting marijuana criminalization with smoke-ins, and politically themed pranks, they were either ignored or denounced by many of the "old school" political left. According to ABC News, "The group was known for street theater pranks and was once referred to as the 'Groucho Marxists'." The Yippies had no formal membership or hierarchy. The organization was founded by Abbie and Anita Hoffman, Jerry Rubin, Nancy Kurshan, and Paul Krassner, at a meeting in the Hoffmans' New York apartment on December 31, 1967. According to his own account, Krassner coined the name. "If the press had created 'hippie,' could not we five hatch the 'yippie'?" Abbie Hoffman wrote. Other activists associated with the Yippies include Stew Albert, Judy Gumbo, Ed Sanders, Robin Morgan, Phil Ochs, Robert M. Ockene, William Kunstler, Jonah Raskin, Steve Conliff, Jerome Washington, John Sinclair, Jim Retherford, Dana Beal, Betty (Zaria) Andrew, Joanee Freedom, Danny Boyle, Ben Masel, Tom Forcade, Paul Watson, David Peel, Wavy Gravy, Aron Kay, Tuli Kupferberg, Jill Johnston, Daisy Deadhead, Leatrice Urbanowicz, Bob Fass, Mayer Vishner, Alice Torbush, Patrick K. Kroupa, Judy Lampe, Steve DeAngelo, Dean Tuckerman, Dennis Peron, Jim Fouratt, Steve Wessing, John Penley, Pete Wagner and Brenton Lengel. A Yippie flag was often seen at anti-war demonstrations. The flag had a black background with a five-pointed red star in the center, and a green cannabis leaf superimposed over it.