Probably New Orleans or St. Louis.
Religious folks in both of those places, and St. Louis has the nicest fans anywhere this side of Nebraska (who has the best fans).
Nebraska fans stand and applaud the opposing team without fail. They are an amazing bunch of people there.
I was honestly shocked to find it wasn't that way every where. Dad taught me to applaud the other team, and always salute a guy that got hurt. Even during the OU/NU games, it was a very friendly atmosphere.