The first major anti-art movement, Dada was a revolt against the culture and values which - it was believed - had caused and supported the carnage of The First World War (1914-18). It quickly developed into an anarchistic type of highly avant-garde art whose aim was to subvert and undermine the value system of the ruling establishment which had allowed the war to happen, including the arts establishment which they viewed as inextricably linked to the discredited socio-political status quo. Errupting simultaneously in 1916, in Europe and America, its leaders were typically very young, in their early twenties, and most had "opted out", avoiding conscription in the shelter of neutral cities such as New York, Zurich and Barcelona.