I was at an AC/DC concert on my birthday in Dallas back in '85 and we had to fight (figuratively) our way through the zealots on the way in and back out to the truck.
Certainly not unique to Oklahoma. I've traveled extensively around the States. There seem to be more churchs than pubs. Obviously a problem...
Same damned thing here in Texas. You can't get away from the fools!
It is an odd state. Too many tales from just a few visits. Although having the bar maid give us the bottle of tequila and tell us to pay whatever at night's end was pretty cool. And some horror tales as well.