These people had nothing to do with the shooting, I really can't stand the discrimination against all gun owners as if we are all to blame for one crazy person's actions. If a black guy robs a bank, do we say all black people must be banned? If a gay man rapes a young boy, do we say all gays are horrible? I know there are a select few out there that would agree to that, but for the most part everyone can see the absurdity of that logic. So why is the reverse not true? The evil was the person who thought it was a good idea to go on a shooting spree, not the guns. Guns can be used for good or for evil, they are nothing but a tool. It's the people behind them that are good or evil. Cops are treated as heroes and yet they wield guns, and a cop could just as easily decide to turn and use his gun for wrong, but who would be at fault? Would you take away all cops weapons? You need to hear about all of the occasions when a citizen had a gun and stopped a crime from happening, but those aren't reported nearly as much as something devastating. If one of those teacher's would have had a gun, maybe this could have all been prevented, but you will never be able to take away all the tools out there to prevent a crazy, evil person from doing harm to others in one form or another. It's just impossible and a sad truth.
But the average gun owner is not a danger to society, I went with my dad to gun shows when I was a kid and had fun. We'd buy a gun and come home and go target shooting or hunting. No evil was ever involved, I don't understand why people can't see that. Not to mention how many lives hunters save from car accidents involving deer, either.