The unsuccessful watercolor painter Adolf Hitler was obsessed with art, that’s a well-known fact. And everyone knows how effectively he used them as a propaganda tool for Nazi ideology. In his book “Wahn und Wunder. Hitler’s war against art,” the British journalist and author Charlie English tells a different story of Nazi art policy: how the art of the mentally ill became the foil against which the National Socialists developed their anti-modern resentment. And what this obsession has to do with the Holocaust.