Author: Marc Schindler, Opinion Contributor

We know what must be done to stop young people from killing one another

Robb Elementary School in Uvalde, Texas, has entered the American lexicon for the same tragic reason that Columbine, Sandy Hook, Marjory Stoneman Douglas and so many other places are names imprinted on this nation’s conscience. In what has become an all-too-familiar pattern, a troubled young man who experienced a difficult childhood took out his anger…