I am not exaggerating. I figured these guys out when they started destroying culturally and historically important statues. (Yes, I equate the Taliban with ISIS on these matters.) Now they are enshrining female sexual slavery as part of their claims about religious legitimacy.
I've come to believe that there is a thing called "evil." These guys are it. I am not a hawk (in the Cheney sense of that word), but I do believe that the world, not just the US, needs to weigh in with a very heavy hand and eliminate ISIS.
Here is the story from NY Times. Be advised. It is not pleasant.