A German born opponent of Nazi Germany, John Heartfield’s political art parodied the pretensions of Hitler’s regime and deconstructed its murderous nature. Below is a man set on a medieval wheel of torture turned into a swastika:
More John Heartfield images here.
And here is a man at Auschwitz, apparently shot on the barbed wire of a fence, and left to hang there:
More “Bearing Witness to the Holocaust” images here.