It's just the venues way of covering their risk by shifting it to others. They are not in direct supervision of displaying so if anything happens they want others to have some insurance coverage as a first line of defense. They will get sued anyways because a smart leaguer will try to lay blame to as many parties as possible hoping that one or all will pay off.
The NRA is a mixed bag. Without them our firearms rights would be gone by now. But their constantly sending me mailings and dire warnings about things gets old. If they quit sending me constant junk mail trying to sell me stuff or get me to donate more money to them they would save a lot of money.
A million dollar liability insurance policy might be a fairly simple thing to buy. I have been one for three million per occurrence, three occurrence max. Others here might have a suggestion of where they buy theirs. Mine is a rider on some business insurance that covers me both at work and in private. Even my home owners insurance has some coverage.
