So I guess the Second Ammendment means diddly to you, along with most of the other people calling for all kinds of weapons legislation.
Let's take a look at Kennesaw, Georgia. A small town in Georgia where every 'Head of Household' is legally mandated to own and maintain a firearm. There has yet to be a single fatal shooting there in the 30 years since that ordinance went into effect. 30 years. Their crime rate, per the 2005 census, is at the lowest rates since 1981.
Let's talk about hunters in rural Alaska, Montana, and parts of the Dakotas. There are many who use so-called assault rifles, to kill large game animals, such as bear. In those places, Alaska in particular, those people live off of what they hunt. Nothing goes to waste, it is all used; the meat, the skin, all of it. It's how they live. Yes, a non-assault weapon can and is more commonly used, but the reaction time is less. I'd like to see your reaction when face-to-face with a bear. Which weapon would you want?
Gun legislation isn't the answer to this tragedy. How about we start looking more seriously at the state of our Mental Health policies? That is where we should be looking.