The humanity of Hitler
Most of the time the answer seems to be that if we humanize Hitler we go partway toward forgiving or even absolving him of his crimes. And in doing so we would open the door for more evil.
Yet if we do not humanize him, that is, if we cannot look at him as a human being, then he is off-limits to history, to be treated as a sort of deity of evil, who can be described but never understood. And while I know there is greater fear of what popular culture could do with such sympathy, the line between gagging movie-makers and gagging historians is thin indeed,