“Like many Nazi institutions, the K.L. embodied conflicting impulses: to reform the criminal, to extort labor from the unproductive, to quarantine the contagious. But most fundamental was the impulse to dehumanize the enemy, which ended up confounding and overriding all the others. Once a prisoner ceased to be human, he could be brutalized, enslaved, experimented on, or gassed at will, because he was no longer a being with a soul or a self but a biological machine. The Muselmänner, the living dead of the camps, stripped of any capacity to think or feel, were the true product of the K.L., the ultimate expression of the Nazi world view.
The impulse to separate some groups of people from the category of the human is, however, a universal one. The enemies we kill in war, the convicted prisoners we lock up for life, even the distant workers who manufacture our clothes and toys—how could any society function if the full humanity of all these were taken into account? In a decent society, there are laws to resist such dehumanization, and institutional and moral forces to protest it. When guards at Rikers Island beat a prisoner to death, or when workers in China making iPhones begin to commit suicide out of despair, we regard these as intolerable evils that must be cured. It is when a society decides that some people deserve to be treated this way—that it is not just inevitable but right to deprive whole categories of people of their humanity—that a crime on the scale of the K.L. becomes a possibility. It is a crime that has been repeated too many times, in too many places, for us to dismiss it with the simple promise of never again.”
