A lot of people have their knickers in a bunch over the theater shooting in Aurora, Colorado. A lot of voices are crying "we need to fix this so it never happens again!" as if their opinion mattered, or as if criminals or the insane gave a rats ass about laws in the first place. "Knee Jerk" legislation sucks like a chest wound.
First off it could have been a lot worse. Had I, or anyone else who put their mind to it wanted to kill a bunch of people in a theater it would have been a lot more effective to use door wedges, chains, padlocks, and a few molatov cocktails to kill more than 12.
Think about it this way:
Step One, use the door wedges, chains and padlocks to defeat the emergency exits.
Step Two, use the molatov cocktails to start a fire and create panic and confusion.
Step Three, as people find out that they can't get out start mowing down groups as they rush into the fatal funnel, the last remaining exit from a now burning theater.
Step Four, ditch your gun and disguise into the burning flames and run from the theater like everybody else afraid of the crazy gunman. If you can do this all in under 5 minutes you have a good chance of escaping beyond the "security cordon" that law enforcement is going to put up to "contain the situation."
None of this is secret information, police response times are public knowledge, and all the components are readily available for purchase or manufacture. There are even some very good plans to make a functioning submachine gun out there for anyone to use, simply using common hand tools.
In terms of life lost, the attack in Aurora barely comes up as a blip on the radar against nightclub fires: http://listverse.com/2010/03/08/top-10-modern-night-club-fires/
Is this cold hearted of me? Probably, but a "knee jerk" reaction to "stop this tragedy from ever happening again" is even worse than cold hearted, it is stupid. The "knee jerk" reaction to 9/11 gave us the TSA, how's that been working out?