Hitler wasn't a Christian because of a passage of the bible written oh about 1600 years before he existed is an unbelievably shaky logical stance to make. So I read through Mat 7, and saw nothing that would make me think, Hitler wasn't a Christian. So I did a little digging, outside of the bible of course, and found
http://en.wikipedia.org/wiki/Adolf_Hitler%27s_religious_be liefs which I found positively illuminating. He was born Roman Catholic, was confirmed in the church, and seemed to at the least hold Christianity in the highest regards. I'm sorry, where does a tree that bears no fruit should be cast into the fire have to do with that?
Now... to say anything probably isn't anything, is again, faulty at best. But again, I'll give you a second of doubt. I strolled back to Wikipedia and discovered http://en.wikipedia.org/wiki/Crusades
"at the Council of Clermont, Pope Urban II called upon all Christians to join a war against the Turks" So that right there might seem to show that the pontiff himself called for the war, and specifically requested his sheep to do the bidding. But, I would agree that they were only looking for a get out of jail free. I'd say that fits most Christians today, as they are so willing and able to one day preach the virtues of Christianity then the next day to do the exact opposite of what was preached to them. But they're very much welcomed to treat God as an etch-a-sketch and as if it never happened.
Please do stop by if you find something else erred. Please do site some reference.