This story has South Texas a little stirred up: several days ago, two armed guys robbed a jewelry store in a San Antonio mall. One unarmed customer tried to intervene somehow when they were confronting another customer, and was shot and killed for his trouble. Another customer, who was armed and licensed for concealed-carry, shot one of the robbers and chased the other out of the store with gunfire; the second robber later was arrested. The first robber is in the hospital in serious condition.
Now it develops that the mall had previously posted signs prohibiting the carrying of weapons. The police don't seem unduly upset; their statements focus on the reasonable response of the armed citizen and the need for others to exercise good judgment in these dangerous situations. The mall manager is busy making statements about how his first priority is the safety of his customers, which may mean trusting and waiting for the police, who knows. I suppose he's trying to figure out whether he's likely to lose more customers by emphasizing his gun-free policy or by congratulating the citizen who ignored it.
Personally I like the effect of knowing that, even in a purportedly gun-free mall, the chances of an armed customer in the store you're trying to rob are pretty decent.
The Texas legislature, by the way, is again considering measures to permit open carry without a license, treating the 2d Amendment as our license. It's just the Wild West out here, ain't it? Y'all come on down. We have our own electrical grid, too.