I’m not so sure about the gun show attendee being a dumb ass.
A CCW holder should automatically assume he can carry in any venue not specifically prohibited by law. I am aware of no obligation to make an exhaustive search for “no loaded weapons allowed” posts, and so they should be prominently displayed if the organizers expect them to be respected.
I have seen MANY prohibition posting that were NOT prominently displayed.
That a cop decided to unsafely dick around with a loaded weapon, once discovered, has very little to do with the owner who surrendered it upon request, in my opinion.
I’ve had a CCW for nigh on 20 years. I’ve also been to enough gun shows, at least here in my State of Georgia, to know that they will not allow a loaded weapon to enter the premises, period. Any CCW holder should know this, especially if he/she has been to a gun show here before.