 Complete the following phrase:  Tristan Tzara was a Romanian and French avant-garde poet, essayist, and performance artist, best for being one of the founders and central figures of the anti-establishment Dada movement. During the final part of his career, Tzara combined his humanist and anti-fascist perspective with a communist vision, joining the Republicans in the Spanish Civil War and the French Resistance during World War II, and serving a term in the National Assembly. Having spoken in favor of liberalization in the Peoples Republic of Hungary just before the 