'A SPINELESS retard with the character of pond scum." A "whacko," "greedy un-American idiot," "fascist," "whining liberal" and "nasty little gun grabber." Those are just some of the names I've been called since I published an Op-Ed article in the Washington Post to commemorate the fifth anniversary of my brother's death. After briefly stating that David and his fiancee were shot and killed by the fiancee's mother, who was angry that she had to move out of their L.A. apartment, I went on to argue for a national ban on handguns. The gun control lobby, led by the Brady Campaign,...