Limiting the amount of guns you are able to legally own will do JACK SHIT to stop this problem.
Why?
BECAUSE CRIMINALS DON'T FUCKING FOLLOW THE FUCKING LAWS!!!!
I'm tired of this stupid-ass rationale. "Less guns, less chances of shootings." That's how a kid thinks. It's like saying "If we lock up cars at night, no one will be able to steal them anymore."
Bad analogy, but you get the point.
What we need are plainclothes security guards armed and in crowd situations like movie theaters, malls, festivals, schools, etc. You have a crazy fuck decide to open fire, you have five or six armed guards who you don't even know are there until they're in play, taking down the sick fuck.