This and the rest of this paragraph is basically how I think about gun control in the US. It's impossible to impose a ban on guns now, and the only people it would affect are people that likely would only have used it in defense. The restrictions that Obama proposed now (sellers need a license, background checks on buyers mandatory, other minor additions) won't help any either. If you're thinking of killing with a gun, you'll find a way to get your hands on one.Anyways, before we get too off track, if you make a law that makes guns illegal or hard to obtain (which Obama is trying), people will still have guns. Mainly criminals. It's called the black market. You can't stop them entirely, or much at all even, unless you literally go house to house and melt them all.
Guns are banned in France, but the 13 November attacks still happened. There's a huge black market in Europe that deals in weapons produced before gun restriction laws were implemented in certain countries. I don't want to see gun ownership among citizens becoming a thing in Europe, and I doubt it ever will, since most people here think of them as disgusting. But if stricter gun laws were implemented in the US, it would be like castrating the citizens that just want to protect themselves.