The weeping mother of the crazed teen gunman who carried out a mass shooting at an Oregon elementary school insisted her son was “a good boy” and that she would have tried to prevent the massacre if she could. Shauntai May Nickerson, the mother of 16-year-old John J. Griffin II, waved off reporters on the porch of her apartment complex as she smoked a cigarette and cried, the New York Times reported. The mother insisted Griffin — who killed three students and one teacher at Silver Rail Elementary School on Thursday — was “a good boy, he really was” and...