Doesn't mean you won't find Moslems who use their interpretations of the Koran as an excuse to kill of course.
God foretold the conflict many moons ago:
As for Ishmael, I have heard you. You can be sure that I will bless him. I will give him children. I will greatly increase his numbers. He will be the father of 12 rulers. And I will make him into a great nation. - Gen 17:20
His children settled in the area between Havilah and Shur. It was near the eastern border of Egypt, as you go toward Asshur. Ishmael's children weren't friendly toward any of the tribes that were related to them. - Gen 25:18