It is wrong to tag luther with responsibility for the Nazis. In this nation we have Freedom of Religion, but if I use that Freedom to force others to convert to Islam can I then turn around and blame the originating founding documents that allowed the freedom to begin with.
Luther was NOT unusual for his day.
With my Masters Thesis, part of my study entailed looking at how the nobility (in this case in Scotland) behaved towards one another. It was barbaric. Brother would cut the tongue out of brother and let him bleed to death over land. Cousins would slay one another without a qualm and even in a church (check the meaning of the family crest for the Kirkpatrick family of Scotland). And, of course the Jews were blamed for EVERYTHING.
This is no excuse. But I can't sit here and see Luther tagged as particularly unusual for his day. After all, Luther wasn't alone in his violent actions in the name of Christianity. Catholicism had made it a regular part of their religion for centuries and Calvinism was no stranger to it.
It is not right to evaluate Luther according to our times. He must be seen as a product of his own times. He had many good points. But in some quite substantial ways he was very wrong.
Just didn't want to confuse him with St. Aquinas, Augustine or Francis of Assisi.