Crass (1977-1984) was a UK-based punk-rock band and collective that – through their multi-disciplinary use of music, tape collages, graphics, spoken word poetry, films and improvisations – promoted anarchism as a political ideology, a way of life and a resistance movement. Crass, both praised and maligned for their provocative output, were held responsible for the infamous hoax “Thatchergate tapes”, in which they constructed, through edited recordings, a conversation between Margaret Thatcher and Ronald Raegan on the subject of Europe as a target for nuclear weapons.