"There are only rare incidents in which people with concealed-weapons permits have used them unlawfully. Ordinary law-abiding people, it turns out, are pretty trustworthy." (Feeling Safe Isn’t Safe Virginia Tech’s “gun-free zone” was not gun-free By Michael Barone)
In many states, people carry concealed weapons and there is no crime. All over, more and more states are coming to their senses. People have the right to defend themselves, specially against madmen who are shooting at random.