Having killed off or driven away Hindus, Buddhists and other minorities, Muslims are now left with only fellow Muslims to take their rage upon. And so, the facade of "one religion under one god, one prophet" swiftly falls apart as Shias take on Sunnis take on Barelvis take on Deobandis and on and on and on. In a diverse society, its Muslims vs everyone else, in an Islamic society it's one Muslim sect vs every other Muslim sect. We are witnessing the same thing in pakistan as well. Religion of peace, indeed.