During the 1980s, behind the Iron Curtain, Surrealism again entered into politics with an underground artistic opposition movement known as the Orange Alternative. The Orange Alternative was created in 1981 by Waldemar Fydrych (alias 'Major'), a graduate of history and art history at the University of Wrocław. They used Surrealist symbolism and terminology in their large scale happenings organized in the major Polish cities during the Jaruzelski regime, and painted Surrealist graffiti on spots covering up anti-regime slogans. Major himself was the author of a "Manifesto of Socialist Surrealism". In this manifesto, he stated that the socialist (communist) system had become so Surrealistic that it could be seen as an expression of art itself. Surrealistic art also remains popular with museum patrons. The Guggenheim Museum in New York City held an exhibit, "Two Private Eyes", in 1999, and in 2001 Tate Modern held an exhibition of Surrealist art that attracted over 170,000 visitors. In 2002 the Met in New York City held a show, "Desire Unbound", and the Centre Georges Pompidou in Paris a show called "La Révolution surréaliste". Surrealists groups and literary publications have continued to be active up to the present day, with groups such as the Chicago Surrealist Group, the Leeds Surrealist Group, and the Surrealist Group of Stockholm. Jan Švankmajer of the Czech-Slovak Surrealists continues to make films and experiment with objects. While Surrealism is typically associated with the arts, it has impacted many other fields. In this sense, Surrealism does not specifically refer only to self-identified "Surrealists", or those sanctioned by Breton, rather, it refers to a range of creative acts of revolt and efforts to liberate imagination. In addition to Surrealist theory being grounded in the ideas of Hegel, Marx and Freud, to its advocates its inherent dynamic is dialectical thought. Surrealists have also drawn on sources as seemingly diverse as Clark Ashton Smith, Montague Summers, Horace Walpole, Fantômas, The Residents, Bugs Bunny, comic strips, the obscure poet Samuel Greenberg and the hobo writer and humourist T-Bone Slim. One might say that Surrealist strands may be found in movements such as Free Jazz (Don Cherry, Sun Ra, Cecil Taylor etc.) and even in the daily lives of people in confrontation with limiting social conditions.