it's as about as sensible as gun control.

I wouldn't be surprised if a crazed psycho decides to kill a bunch of unarmed people inside a mall or any "gun free" zone.

in reality, putting up "gun free" zones is like telling perps, hey! we're all unarmed here! we won't resist you if you do something evil. or removing the spines of a porcupine for lack of better analogy.