Ha! If we're going off this, then all religions have blood on their hands; Christianity must also be a religion of violence. Ever heard of the Crusades? The killings of non-believers, the violence between different branches of Christianity... the colonisation of the Americas, and Africa, and Asia by European Christians and the forced conversion of their people into Christianity?
Does this mean that Christianity is a religion of violence, because violence has been done in its name? I think not... the same goes for Islam.