Uh no sunshine,we are increasingly more violent compared with the last 50 years. We may be down as compared to recently, although I think that's Political BS anyway. If you go back and look at the last 50 years, there's clearly a problem with violence that didn't exist here in the USA. Even 30 years ago you didn't have all these mass killings at the rate it is today. Every other week some nutjob goes off. The Tommy gun has been around since 1918 and the AK47 since WWII, both capable of mass shootings yet you didn't see someone walking into a school and shooting up the place with a Tommy gun or a AK47. Hell you didn't even see someone shooting a school up with a musket. The point being, it wasn't done. This is a new problem and we need to ask ourselves why and whats causing it.
FYI when I was a kid, a lot of kids, myself included, carried pocket knives to school. Amount of kids that got stabbed at my school? 0 Nor was it a concern of the school faculty. Gum chewing and smoking in school was the major issue. Now my kids have to pass through Metal detector's before entering school and the doors locked behind them. In my day the doors were all left unlocked during the day. Heck when I was a kid you could go to the beach all day, leave every door and window in the house open and unlocked and nobody would bother the house. That's how much society has changed.
It's not the guns it's mental and social issues that aren't being addressed. It's easier to pick on an object that can't fight back than deal with the real issues with people who can complain or vote you out of office. Blame it on the gun, sweep it under the carpet and hope it goes away hasn't worked and won't work. every mass killing is evidence of that.
BTW Elliot Rodgers used a knife to stab three people, are we going to ban knives too?