There is something very wrong with a society that thinks that is is "common sense" to punish everyone for the crimes of a madman. Connecticut has very restrictive gun laws, but that didn't stop the criminal. So how will making bad laws for the whole country work any better?
There are a lot of uses for guns besides murder. You never hear about the million or so cases a year where firearms were used to prevent crimes, especially home invasions and rapes, mostly without a shot even being fired. Even though it wouldn't have made a difference in the school shooting, preventing decent citizens from being properly armed is an open invite to criminals to commit their crimes without fear of getting hurt.
As far as "assault weapons," the looks of a gun don't make it any more or less dangerous, or affect the uses of it. Many of these bad-looking guns are used for hunting, and other legitimate uses. and there are many good-looking guns that are far more powerful.
"High-capacity" magazines? It doesn't take much longer to fire 30 rounds from one magazine than it does to fire 3 ten-round clips. It only takes a fraction of a second to change a magazine. Plus, bigger capacity mags jam more frequently than the smaller ones. But some people, like myself, prefer the bigger ones for target practice, since we can concentrate on the shots and follow up, and keep shooting when we are having a good run, without worrying about changing the clips so often. Unfortunately, I live in NY state, which only allows 10-shot clips, so just when I start getting good with my pistol, I have to stop and reload, and get set up all over again. (I need to buy more mags, but for now I have to keep reloading).
There is also something very wrong with a society that can't see through the dictatorial ploys of the government. Only a tyrannical governemnt needs to be afraid of an armed populace. In fact, the primary reason for the Second Amendment was to protect the people from tyranny. It is despicable how many people actually go along with the government and willing want to put themselves in chains.
I agree that that mother was not being responsible having all those firearms in the house with a mentally ill son. But why should the majority of responsible gun owners be punished for the irresponsibility of the few? Maybe if proper care were taken of mentally ill people, this wouldn't have happened, because he would have been in an institution.