Bomb Control - It is already illegal to own Explosive Devices, TNT etc. without the proper licensing. When I was a kid, this wasn't the case, but there you go.
If the Perp was sitting in his brand new Chevy Volt outside the Theater and ran over and killed twelve people while injuring scores more, would the Liberals threaten to take Cars away from people or require a License to operate one, oh wait.
I just remembered, an Old Guy hit the gas pedal instead of the Brake pedal on his Crown Vic and killed and injured a bunch of people at a Farmers Market some years back. Why didn't the Libtards try to ban Cars back then?
There was also at least one case of a muslim who ran people down in his car, with no calls for mental health checks or bans on cars.
Ah here they are: Various attacks in US by muslims using cars as weapons: http://www.jihadwatch.org/2010/10/al-qaeda-ram-cars-into-crowds-for-allah.html#comment-720723
2011 attack in SD: http://www.freerepublic.com/focus/f-bloggers/2674336/posts