This article attempts to promote tolerance and whatnot, but its condescending, I-know-better-than-you-silly-people-who-take-religion-seriously attitude would drive religious people nuts and make them wary of efforts to make them get along.
Basically, they say, "Hmmm. The Koran and the Bible have passages that condone tolerance for outsiders and passages that imply that you gotta kill 'em all. Maybe if we could understand this issue, the religious people could get along."
Of course, their explanation of how these contradicting passages got in there is based on the assumption that the holy books were affected by the circumstances of the people writing them, not the eternal will and wisdom of G-d. The religious people--at least those who are fighting about religion--are never gonna accept any of that, so cut the crap. Just say you're going to expose the pettiness of religiously inspired prejudice.