Judaism, Christianity, and Islam are simply extensions of each other. The latter two borrowed heavily from the first of them. The violence associated with Islam is nothing new it is the old ploy of using religion to justify their acts of violence in the name of their god. Every religion at one time or another has done it, Christianity had its fair share of bloodletting several times throughout its own bloody history. In the end it's about world dominance.
There is nothing people will not maintain when they are slaves to superstition
http://chatpilot-godisamyth.blogspot.com/
http://chatpilot-godisamyth.blogspot.com/