Gun crimes are largely committed by people who do not have the legal right to those guns. The vast majority of legal gun owners are responsible people. When you ban guns, they'll just go to other means of killing. You won't stop it, if they want to kill people they will.
When I first used the internet, it wasn't called the internet, it was ARPAnet, and it was all text based forums and email. Websites hadn't been invented yet.
Religion, because they all believe that they are the only ones who are right, and everyone else needs to believe what they believe, or else something bad will come of it.
That's the idea, but I need something more than an add a size insert. I'm currently sporting a set of D cups, need something that size that actually moves. Like a friend of mine likes to say "I take one step, they take two".
This is exactly how science works. It self corrects as new information becomes available.