These sights, like the truck full of bodies, are not beyond belief—we know that they were true—but they are, in some sense, beyond imagination. It is very hard, maybe impossible, to imagine being one of those men, still less one of those infants. And such sights raise the question of why, exactly, we read about the camps. If it is merely to revel in the grotesque, then learning about this evil is itself a species of evil, a further exploitation of the dead. If it is to exercise sympathy or pay a debt to memory, then it quickly becomes clear that the exercise is hopeless, the debt overwhelming: there is no way to feel as much, remember as much, imagine as much as the dead justly demand. What remains as a justification is the future: the determination never again to allow something like the Nazi camps to exist.
Nazi Germany maintained concentration camps (German: Konzentrationslager, KZ or KL) throughout the territories it controlled before and during the Second World War. The first Nazi camps were erected in Germany in March 1933 immediately after Hitler became Chancellor and his Nazi Party was given control of the police by Reich Interior Minister Wilhelm Frick and Prussian Acting Interior Minister Hermann Göring. Used to hold and torture political opponents and union organizers, the camps initially held around 45,000 prisoners. In 1933–1939, before the onset of war, most prisoners consisted of German Communists, Socialists, Social Democrats, Roma, Jehovah's Witnesses, homosexuals, and persons accused of 'asocial' or socially 'deviant' behavior by the Germans.