Thanks for injecting some sanity, Zac to some highly suspect views.
Despite Obama's wailings (and were those tears crocodile - could almost rival Reagan for acting), the US ain't going to change its gun laws. It's in the constitution and to change that you need 70% support in both Houses and with the NRA et al....fat chance - a bit like the structure of the Synod to prevent change.
The only action can be at State or City level - coincidentally, Connecticut has some of the tightest rules to acquisition, so the rules didn't help prevent this - as has been pointed out here several times, potential murderers/criminals will get them by hook or crook.
Lastly, I think that most of these "going postal" shootings have been committed by Caucasians.....I haven't got the stats on that but having lived through several over there, that is my memory of them.