I hope a massive lawsuit is brought against the mall owner and manager.
They take away my right to protect myself, then they accept the responsibility of protecting me. And if they fail...
Any place that actually bans weapons should be subject to a much heightened legal responsibility to protect its patrons. I figure treble any damages might be about right. Eventually the increased insurance costs would remedy the situation.
I personally ignore all such restrictions. Better to be judged by 12 than carried by 6.