The thing to note WRT this gun control discussion is that NJ has some of the most restrictive gun control laws in the nation. If there was a state where there was a model of gun control to work and protect the population, it would be NJ, the place where the shooter was from.
So somehow a resident of one of the most restrictive states got enough guns, a bulletproof vest, etc and went and did this horrible act.
Seems to indicate to me that gun control is not a valid thing.
It comes back to the point though that gun control isnt worth much, but there IS indeed a large portion of the population that perhaps should not be granted the right to bear arms.
This guy was obviosuly crazy. Ill bet that even if this was well known, he lied on the firearms check (in NJ there is a mental health check too, costs $18), and one of the patients' rights type things prevented the right data flow from occurring.
IMO its not a gun control issue - gun control doesnt work and things happen because there are ways around it (plus 200k+ guns falling into the wrong hands by incompetent owners each year). Its an issue of recognizing that some people DO have issues and arent fit to perform all things that others can... because the societal expense, like this for example, is far too high. Maybe it sucks, or someone will be offended, but that's life. We have to deal with the crazies and incompetents, not restrict the rights of the functional core of the population.