Well, in my Ethics class we were discussing different views of morality, and Himmler invariably was brought up.
Surprisingly enough, he has been documented to say that he had sympathy for the victims of the Jewish Purge.
"To retain one's feelings while acting in violation of them is glorious." - H.H.
Himmler was not an immoral man by any standards, rather he was what we would call an Ethical Egoist. As in he believed that one should do what is best for oneself in any situation. He had sympathy for the Jews, yes, but it was in his best interests to hide that sympathy from his peers and even to further facilitate the plight of the Jews, thus increasing his ranking in Nazi German Society, thus serving his own self interest. If one has the choice of enforcing a terrible situation upon a group of people or being summarily executed for not doing so, the choice is that obvious in the eyes of an egoist.
And then we have a man named Johnathan Edwards (17th century philosopher) who did very little harm to his fellow man if any at all, but believed that everyone is damned to hell, and he held absolutely no sympathy for anyone.
So if we are looking in terms of Morality, it could be argued that Edwards has a 'worse' morality than Himmler, in that while Himmler has sympathy for his victims, Edwards has no sympathy for anyone at all.
This can be compared to the situation in "Alice in Wonderland" where we have a Walrus and a Fisherman(?) eating a bunch of innocent baby clams. The Walrus eats many more than the Fisherman, but cries inconsolably the whole time, while the Fisherman just stands by, eating but a few and showing no emotion whatsoever. The Walrus would be like Himmler, while the Fisherman would be like Edwards.
ANYway, maybe I went a bit off track there, but I hope it helps you out somehow.
