HMMM, lets see...
Shootings at schools = gun free zones
Shootings at army bases = gun free zones
Robberies at Target = gun free zone
Oh boy, these guns have a mind of their own. How do they get in?
And how many robberies or shootings occur at a gun show? How many robberies or shootings occur at a gun store? It should be in the thousands since there are so many mean guns there.
Actually, gun shows would potentially be great targets for robberies. The patrons generally carry large wads of cash, as do most of the vendors. On top of that, the products being sold are almost universally high-value items.
It must be just that thieves don’t know how good the pickings are at them; that’s the only reason no one has tried to rob one yet.