Paul Harvey should apologize...unless he can come up with any examples of Islam "encouraging killing." Something like Islamics flying airplanes into towers, or blowing up civilians, or anything like that. Maybe he could do an internet search and see if he can find any examples...
We traded swords with some Jehovah's Witnesses once. Of course, like the Muslim faith, they come in with a pitch on how simliar their Truth is to Christian Truth. But all the things under the surface (Christ is really the Archangel Micheal, no Trinity, no Heaven, etc.) is never mentioned until you are deeper into the faith. Same with the Muslims...there are all kinds of things "in the book" that are never addressed to the outside observer. I think we should all read the Koran, for the simple reason of understanding what the book says, and being ready to refute it.
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Glenn Beck said yesterday that he has read "Mein Kampf" because he wanted to understand how perfectly normal, good-intentioned human beings could arrive at the point they don't bat an eye while trucks full of people pass their front door on the way to the concentration camps. Be aware of what the other guy thinks, and when he says, "Mine is the 'religion of peace", call him out.