I've seen talk around the 'net saying the Viginia Tech shootings clearly demonstrate the need for tighter gun control laws in this country, since Cho was able to walk into a store and purchase the gun he used to kill 32 people. Now, I am by no means an NRA "More guns = less crime because we can shoot the bastards!" sort of guy, but I've never been for banning the ownership of firearms by private citizens either.
I found this article in the NY Times: U.S. Rules Made Killer Ineligible to Purchase Gun
Yeah, he bought the gun. But that shouldn't have happened. If the proper checks were made at the federal level, that purchase would have been denied. Sure, he could try to get one on the black market, but that's possible even if a ban is put in place. (Banning guns will get them off the streets? Sure! It's worked so well for drugs, underage alcohol, not-yet-released Hollywood films...)
We don't need tighter gun control laws. We just need to properly enforce the ones we have!