Religion has caused more wars than anything else in history.

Answer:
It is true that man has used religion for political gain. Nazi Germany had “God with us” engraved in German on the belts of Nazi soldiers. America said, “Praise the Lord and pass the ammunition.” The law may even allow you to start the Christian Nazi Party, if you so desire. You can become a “reverend” for a few dollars through the tabloid classifieds and then further your political agenda with the world’s blessing, no matter how much it smears the name of Christ.
Jesus tells us in John 16:2,3 that there will be some who, in their error, commit atrocities and murder in the name of God: “The time is coming that whosoever kills you will think that he does God service.” However, He informs us that these are not true believers: “And these things will they do to you, because they have not known the Father, nor me.” (See also 1 John 3:15.)
Jesus told His followers to love their enemies. So if a man puts a knife into someone’s back in the name of Christianity, something obviously isn’t right. If we human beings can detect it, how much more will God? He will deal with it on Judgment Day. “I know that the Lord is always on the side of right. But it is my constant anxiety and prayer that I—and this nation—should be on the Lord’s side.” Abraham Lincoln