Possibly true, but certainly not quantifiable. Hitler does come to mind for me, although religion did play its part in his madness, though more through socialogical than true religious differences. However, many wars/atrocities have been carried out in the name of religion; from the Crusades to Bosnia to today's events. I just think that is a shame, that's all. Especially since not all (and perhaps only one) of the faiths can be the one true faith.
Too bad Faithful and True left the indelible stamp of prophecy on His Word.
Then again, the master of history (or Alpha and Omega) can do such things.