The antis would have gun muggles believe that gun owners are spoiling for a fight. Especially anyone “crazy” enough to carry a concealed weapon or, Heaven forfend, open carry. I find the opposite to be true: most gun carriers avoid stupid people in stupid places doing stupid things. Which would be where?
I reckon no-go zones include ATM’s in bad neighborhoods and/or after dark. It might also include sporting events or concerts. Or entire states like New Jersey and California, where civilian disarmament includes out-of-state visitors. And countries, like Mexico, where cartel craziness has invaded tourist meccas like Acapulco and Puerto Vallarta. Where’s no-go for you?