I don't think that correlation is exclusively indicative of causation though. I think there are a lot of factors "everywhere else" (cultural, economical, population, etc) that play into things here just as much if not more than the strictness of gun laws. Gun control laws alone aren't going to solve anything.
I'm pretty liberal, but I'm also a realist. I hate seeing shit go down like we saw yesterday, but I also realize that part of this increasing weariness is because of the more connected world we live in and the 24-hour news cycle. We're just noticing it more.
Pew put out a study back in October that shows gun violence is actually
down 30% over the past 20 years. If you take out suicide by gun, the rate is actually down closer to 49%.