Let's hold off on the over-reaction, shall we?
I'm not sure what the best response should be, generally, to deal with the school shootings. But before people begin to demand bannings, I would note:
1. There are MILLIONS of firearms in this country. What kind of wand makes them disappear?
2. It's already a felony to carry a handgun on campus at Northern Illinois University. That didn't seem to discourage Stephen Kazmierczak from bringing three, plus a shotgun, yesterday. People that murder other people before committing suicide apparently don't worry about that putting a felony on their Permanent Record.
3. Creating effective gun-free zones on campuses is impossible. I have NEVER been challenged to produce identification as a peace officer on campus, and I always carry on campus. Putting metal detectors at the front doors to the lecture halls is untenable. I'm late for class as it is. Think of going into the secure zone of a major airport every time you entered a class. Good. Lord. (Not to mention the cost of manning the hundreds of new posts on campus.)
4. Making this tragedy political would be the lowest of the low.
That is all.