ARP and his ilk refer to the French artist and poet, Tristan Tzara, and the Dadaist movement he was a part of. Dadaism was an artistic and literary movement that began in Zurich, Switzerland in 1916 and spread throughout Europe. It was a reaction to the horrors of World War I and sought to challenge the traditional values of art and culture. The movement was characterized by its use of absurdist and anti-rationalist techniques, such as collage, montage, and readymades. Tzara was one of the most influential figures of the movement, and his works were often seen as a form of protest against the war.