I don't often copy myself, but in this case I will--from Oct. for islaamea-----
A couple of comments--
Us vs Them--All religions are excellent at this. That is the major point for them all--our religion is the best, no, not the best, the only, way of looking at the world. It is inherently 'us vs them'.
Ideology--Most religions go beyond an ideology--they go into your thoughts and are inherently totalitarian in nature. They control the entire person much more deeply than a political ideology. Not even Stalinism or Nazism controled the person as much as the christian or islam religion strives to. Any religion with a rigid or strong hierarchy produces violence. Islam is no exception.
If, as you claim, islam is all about peace, how does Isis get away with all of it's violence? If they are such a tiny part of islam, where is the huge majority of the people of islam holding them in check? If they do not have the support of the muslims, then who supports them? I may be mistaken, but I view the Isis 'problem' as being part of a religious civil war. It really is all about islam vs islam. The US as the "Great Satan" is used as a tool to strengthen one side vs the other.
My thought is that the world would have been better of in all ways without the disease of religion. If I were God for a moment, I would wipe out all religions and not allow any to form. That would not produce utopia, but it would make for a more peaceful world.