While the Dada art movement was also an anti-war organization, Dadaists used art to oppose all wars. The founders of the movement had left Germany and Romania to escape the destruction of the war. At the Cabaret Voltaire in Zürich they put on performances expressing their disgust with the war and with the interests that inspired it. By some accounts Dada coalesced on October 6, 1916 at the cabaret. The artists used abstraction to fight against the social, political, and cultural ideas of that time that they believed had caused the war. Dadaists viewed abstraction as the result of a lack of planning and of logical thought-processes. When World War I ended in 1918, most of the Zürich Dadaists returned to their home countries, and some began Dada activities in other cities.