Kasper Opstrup Frederiksen is a Danish writer and researcher of radical culture. For many years, he was active in the Copenhagen-based art collective floorless which was involved with self-publishing as well as creating multi-media installations inside as well as outside the institutions. At the moment, he is finishing a PhD at the London Consortium in the UK about invisible insurrections and the radical imaginary from the 1960s until today. His research interests include, among others, the avant-garde, activism, alternative education, tactical media, new technologies and the counter-culture as well as contemporary intersections of art, politics, science and the occult. His writings have appeared in both Danish and English, most recently in Dansk Gadekunst (2011) and the forthcoming Art, Refusal and Multitude: Remapping the History of the Radical Avant-Garde (2012).