Obviously, these boys had problems, and someone should have recognized the signs. I'm sure many decent, law-abiding citizens will be grieving over this terrible oversight for years. I don't know the families of these boys, and I can only imagine the horrible pain that they are feeling at the loss of their own sons and the feelings of responsibility for not preventing the tragedy. If the people of Littleton and other communities recently affected by violence can work together to help the rest of us learn of clues to watch for, perhaps parents can prevent the next tragedy. If that was the limit of their nature, I don't believe we would be having this discussion.
Guns are much more than mere metal.
They bring death. When used correctly, that may mean game food for a family. Sadly, the molded metal doesn't care whether it kills a deer or a child. We must control guns. Because I do worry about the children, we must control guns.