And it has only been going on since the 7th-century.
Via PJ Media:
Responding to criticism that this week’s summit on violent extremism isn’t focused on radical Islam — while most of the participating group are linked to the Muslim community — White House press secretary Josh Earnest said the administration is “very mindful of the fact that a particularly virulent strain of extremist ideology has tried to insert itself in the Muslim community.”
“There’s no question about that. That’s true in the United States. That’s true in other places around the world. And that is — will be the subject of extensive discussion at the — at the summit,” Earnest told reporters at today’s briefing.