Guns are hardly biggest problem
As horrible as Sandy Hook was, we have larger problems to work on, in the order of 10 times and even hundreds times that of firearms deaths. According FBI statistics, the weapon of choice in homicides in the U.S. is the baseball bat, and that by many times that of legally owned firearms. So let us not get hysterical and deprive 10s of millions of legal gun owners of their rights under that Constitution. Let us think with cool heads and clear minds and tackle the big problem areas first.