People do things for the wrong reasons all the time, and whether they think that they are right or not, does matter.
I'm sorry. There is no excuse that anyone can make that will justify mass murder. It doesn't matter what the reason or motive is. It's a reprehensible crime against humanity.
Am I missing something? It "does matter" and "It doesn't matter"? Which is it? Not the easiest of topics is it?

Personally, I hate it. I deal with actual EVIL, the kind people pretend does not exist, every doggone day, and here's my two cents for what it's worth.
There is always a certian confusion when it comes to these questions, and the only answer is the one that follows this question: "Would I believe in, and take part in this?". In which case, defend it. If not, accuse it. But there really isn't any room for academic ecquivocation.
Hitler sent train loads of people I really would have loved to have had the opportunity to have had a drink with "up the chimney"; I think their kids and grandkids would've been nice to have known, also. Is he any worse than Stalin? I dunno; I don't care. All I know is that he wins the prize as "Most Evil Human Being Ever" (take a worldwide poll and see how many say Genghis, Ceasar, or any of the other Civ leaders). Debate it, argue it, pseudo-intellectual regurgitate over it for all I care, but this is a game I play for fun, and I don't want to see / hear from / have anything even remotely glorify the existence of this bastard; it cuts too close to home and ruins the fun.
You can "devil's advocate" all you want, but at the end of the day it comes down to What do you stand for? Frankly, I stand against everything this douche represented and that people propagate in his name.