To the OP, just to clarify something here.
Islam has long came to bring peace among its own followers. That's pretty evident and well observed by us, contrary to what others might think.
For those considered infidels/polytheisms? nope, I'd say it's actually the other way around, and let nobody BS you about it.
Yes we were ordered to deal with fairness and just; but were also given the duty to spread the word, whether by peace or war. We were ordered indeed to wage war against the infidels; that's been well documented, supported by evidence from both Quran and Hadith.
While evidently the Islamic world pretends to be the peaceful group that wish you no harm, don't forget on the other hand they're totally proud of their jihadist history, and rarely gave another thought to those who were slaughtered, enslaved, or their homes taken away during those campaigns.
Now of course, many Islamic modernist/reformers would argue that that order should be archived; that Muslims can practice/preach their religion almost freely in the largest part of the world without any oppression whatsoever, so against whom shall we exactly wage that war? and why the insistence to make it a religious war.
That group truly does exist. Problem is however, there are still quite many fundamentalists who believe otherwise.
But how about Judaism for a moment. Consider it no offense, but the dozens of prophets whom were sent to your ancestors, what was their call; live your life the way it's and embrace whatever you like? no kidding....
It's the same exact message, almost the same exact orders, by the same exact God.
The Jews would continue to keep on their denial forever, whereas the Christians are still considering the last of the Jews messenger as a god, while both kept bashing Islam as something totally fabricated out of Mohamed's illiterate mind.
Definitely every group has had its own share of war crimes against humanity, in some time or another, by different ways for different goals. Yet, everybody keep playing the righteous nation bs, in order to conceal and justify his actions and write history.