This post seems to imply that sectarianism and divisions are uniquely Islamic, and that these sects think the others are worthy of death.
I looked up the number of Christian denominations once and, if I remember rightly, the number was some 60,000. And there is a substantial number of those that believe that unless the others repent, they are bound for hell.
The difference seems to be that very few of the Christian denominations believe it is their call to send those they disagree with to hell.
Vengence is mine, sayeth the Lord.
The American Revolution hammered home that settlement in the First Three Amendments in the Bill of Rights.
Islam is probably beyond reform. On the other hand, a vigorous, store-front driven, fundamentalist and Pentecostal Christian movement has sufficient flexibility to give these people what they really want. This may well require US military protection for the foreseeable future.