The bottom line, that most of you won't understand until you actually have kids, is that a parent shouldn't have to worry about their child attending a public school or college and getting shot to death. Is this the kind of world you want to live in? How about going on a date night at the movies and ready to eat some popcorn, when some guy with a gun decides, fuck it, I'm shooting the shit out of this place and the people in it. It's fucked up and, yes, GUNS are the problem. Unless there is serious regulation or stricter laws, there is nothing to prevent this kind of shit in the future. There have been 142 mass shootings from 2012 to 2014. ONE HUNDRED AND FORTY TWO just in the good ol' US of A. Something has to be done and if you don't agree, then I feel bad for you and your lack of human compassion. As I stated in my previous post, it's a lot harder to kill a group of people with any other weapon than a gun. Guns are designed to kill quickly and efficiently and that's exactly what they do. They are a tool for killing. You can argue that they're in the wrong hands or whatever, but the fact of the matter is, there is nothing stopping them from finding said hands in the first place.
Edit: Point with the graph is to show you how many people are killed each year on our soil, by our own people, with our own guns. Thought that was obvious. Also to squash the "but crazy people are doing the shooting" argument.