Oh yes, I would agree the basics of Christianity are supposed to be peace and forgiveness, but I have found over the years that evil men will twist anything to their own gain.
Chrisitanity is about brotherhood. Yet, until recently and even in some circles, being black is taught to either be the Mark of Cain or they are descendants of Ham. I have been SHOCKED to see people who are rational and professed Christians tell their children this. (Specifically a Baptist friend of mine who told her children Evolution isn't right, being black is the Mark of Cain )
Political leaders have been using Christianity for 1700 years for political gain. They have made rulings and twisted doctrines to give them the maximum power. Everything from tracing lineages to David to justify claims to the Throne of (Fill in the Blank) Nation to declaring heretics and casting them out of their countries.
If Christianity were not such a powerful tool, then Pennsylvania would not have been settled by the Quakers, Massachusetts by the Puritans and the Mormons wouldn't have been driven from Illinois under threats of death.
I always fear a leader who wears their faith so openly. In Russia, they say true christians wear their cross under their clothes. Its a sign of humility. For years, I wore my Crucifix under my shirt for that reason.
So, when these things happen in Islamic countries, I think of the Byzantine Empire and the Holy Roman Empire. Its no different. I look at the Church of England, the Catholic Church and the Evangelical movement.
Atheism is even a religion of sorts. Look at the fanatical actions of Atheist nations like the USSR.
Islam's basis is brotherhood. The Quran says to kill a man is to have killed all of humanity, but to save a man is to have saved all of humanity. If we lived in a perfect world where there were no evil, then there would be no violence.
Hinduism is pacifist. Study Rajaraja Chola I. He built many temples because his hands were bloodied by war and its a major sin in Hinduism to kill.
Islam cannot be blamed for those who pervert it and take passages out of context. Nor can any other faith.