>>>It has very little to do with nations or religions and much to do with personalities and human nature.
>>Exactly so. I offer the Crusades as an example in support
>
>Still, without religion, this wouldn't have happened. Belief can be a very dangerous thing.

It really has several very communistic features which make the people easy to manipulate: the cult of infallible institution, cult of a fatherly figure, demands obedience in matters of both body and mind, demands unification of the minds, suppresses intellectual independence etc etc.

Even in cases when the religion is not abused for political purposes, it's simply profiled as ready for it. Probably each religion had its own fanatics at some point in its history; it was rather a matter of keeping them leashed and making sure they don't do much damage.

In this case we have a religion which simply can't leash its fanatics, because there obviously are some (political?) forces using them.