DADA developed in Germany and Switzerland after the First World War. Many of the first members of the movement had seen trench warfare, and the experience destroyed their faith in Western Civilization. If Western Civilization had led to what they experienced, they thought, it was worthless, and therefore DADA rejected traditional concepts of logic and beauty in favor of absurdity. DADAists tended to be hard leftists. When Hitler came to power, they fled to Switzerland or the United States.