You know what the "Interfaith"-concept reminds me of? Conspiracy-theorists.

[onager]

15. They don't attack each other until...

One religion gets its grubby paws on power in the real world. Then the mask falls off and those other heretics are fair game.

e.g., here in One Nation Under Jesus, we had the Philadelphia Bible Wars:

In fact, the parallels between the rhetoric of nineteenth-century America's Protestant majority and today's Religious Right are startling. As Roman Catholics and Protestants battled more than a century ago over prayer and Bible reading in public schools, Protestants relied on the same arguments uttered by modern-day TV preachers: Protestant practices in public schools were "traditional"; those who don't like the exercises could get up and leave the room; a little religion never hurt anyone; and finally, Protestants were the majority and should have the right to do whatever they wanted.

Like the modern Religious Right, ultraconservative Protestant leaders of the nineteenth century insisted the United States was a "Christian nation." Only one catch: by "Christian" they really meant "Protestant."

http://candst.tripod.com/boston3.htm

I saw this many times in Egypt, between Muslims and Coptic Xians. When religious leaders wanted the freedom to discriminate against atheists or gays etc., they could come together in public and whine to the govt. about it. But that Kumbayah Krap stopped when a political candidate wanted to stir up the populace, or when the demographics of a neighborhood changed and a new church or mosque was being built. Then riots often broke out.