Good debate tactic just tell someone they're wrong, and keep at it. Why am I entirely wrong? Crusades weren't really military campaigns by christian europe waged against muslims, jews, eastern orthodox christians and numerous other peoples? They weren't sanctioned by the pope? Crusaders were not granted forgiveness for all kinds of sins by the church if they went on a crusade? Talking of church approved torture and prosecution anyone remember the inquistions? Expeling/killing of jews from almost every european country during the medival ages, not once but several times. Christianity has just as much blood on its hands as islam, the religions themselves are not crazy they're just books/systems of belief and people do with it as they choose to do with it.