We may never come to understand exactly what was on the crazed mind of Adam Lanza, the man identified as the Connecticut gunman who set out from his home with murder in his heart. All we know, based on reports, is that this troubled young man had an issue with his mother, a schoolteacher in Newtown, Connecticut, that so enraged him he drove with a .223-caliber assault rifle and at least two other guns to attack in cold blood  an elementary school where she taught.