i think you're right, in theory. but with that statement you enter a huge grey area. if you can say - well a person might say they belong to a religion and cloak themselves in its symbols, doctrines, and traditions, but that doesn't mean they are really a part of that religion - how can you ever know if anyone is a "real" christian? you can't assume someone is lying about it just because they don't behave the same way that you would if you were a part of that religion. you also can't get into their mind and ascertain their true thoughts on the subject. in the absence of such proof, one has to assume that what a person says they believe is what they actually believe, especially if their actions are consistent with a possible interpretation of their proclaimed philosophy or religion. hitler was christian, it seems obvious. he may not have been what most people think of as a "true" christian, but so what?