What he did with the guns was, for sure, evil. But simply owning a lot of guns should never be a crime. And the government has NO RIGHT to know what kinds of guns, or how many, are out there. Our guns are the ONLY thing protecting us from the hard tyranny OZero and his ilk wish upon all of us.
If most law-abiding citizens carried, mass shootings would stop. If anything, we should be encouraging gun ownership — and open-carry everywhere.