In some states, these signs don’t even mean that a person can’t carry a concealed weapon into the shopping center. In my state, for instance, assuming you are otherwise able to legally carry a gun (meaning you took a class and aren’t a felon), the list of areas where you can’t legally carry a gun is very limited: Federal buildings, courthouses, etc. If a business has a sign posted stating “no guns allowed,” you can still legally carry your weapon in that business. If an employee sees that you’re armed, they can ask you to leave, and you’re trespassing if you refuse, but nothing legally stops you from carrying a gun into the establishment in the first place.

As a disclaimer, I’m not arguing this one way or another. I have a license to carry a concealed handgun, in fact. Just sharing information.