Christianity is not intolerant towards other faiths. One of the most important of the ten commandments is "Love thy neighbour as thyself" Look at it deeply and remember that it does not say "Love thy Christian neighbour as thyself"
Christ taught forgiveness all His life and this is His basic teaching. He forgave people who nailed Him on the cross.
More recently, when Graham Staines was murdered in Orissa, his widow Mrs. Staines completely forgave the murderers of her husband and two young boys because that is the command of her saviour Jesus Christ.
So, why are you talking of civil war? Christians may be wrong in different ways including being unchristian but that does not mean that Christianity espouses that.
Let us not spew hatred at others. It is a time where we need to love each other.