Because some of the anti-gun control people in this thread are using hyperbole to attack arguments I didn't actually make, let me clarify.
I didn't say that people owning one handgun and people owning 6 assault rifles were like co-dependent, and that having one be legal instantly meant the other would be as well. I just think both should be illegal. It's instances like this where killers go so overboard with crazy weapons and ammo that it seems difficult to enforce, but I'm willing to bet 95% of the TWELVE THOUSAND GUN HOMICIDES PER YEAR IN THE U.S. HOLY SHIT are committed by a dude who has way fewer guns, probably used a handgun, and didn't put a lot of planning or effort into it.
Let me give an example of what I'm talking about so people can stop using their interpretation of this particular shooting to somehow argue ALL gun control is futile.
For those who don't know, Scotland is kind of a shithole. A LOT of violent crime occurs there, committed by youth gangs. By far the worst example of this crime can be found in Glasgow, where certain areas are like some of the worst ghettos in the Western world. Knives are the primary source of homicide. People call it the most dangerous city in all of Western Europe.
According to this document:
http://www.scccj.org.uk/wp-content/uploads/2011/08/0124207_homicide_scotland_10-11.pdf
From 2010-2011, there were 97 homicide victims in all of Scotland. The amount committed in Strathclyde (the region which Glasgow is in, which has 2.5 million people) was 61. The amount in the city of Glasgow itself (which has about 600,000 people) was 26.
Almost all these homicides were committed with knives, because guns simply are not available.
Compare that to the homicide rate of Baltimore, the most violent major city in the United States, which is only very slightly bigger than Glasgow (620,000 people). Baltimore reported 196 homicides in 2011, which was actually its lowest rate since 1978 (the year before, it had 223 and Glasgow only had 20).
SO STOP SAYING GUNS DON'T KILL PEOPLE, PEOPLE KILL PEOPLE. WHEN THEY DON'T HAVE GUNS IT'S A HELL OF A LOT TOUGHER.