Look at the faces of people slaughtered in Las Vegas. Moms, dads, nurses, everyday workers, friends, brothers, sisters, soldiers, cops, and music lovers. Just people living their innocent lives when a maniac ended their existence from a sniper's nest in a suite at Mandalay Bay. The world is stunned and mortified at the actions of Stephen Paddock, the Las Vegas mass murderer. As we mend the wounds of the injured and support the survivors, we still have to ask why an old man without known rage issues would murder en masse. On the morning after, Paddock's brother Eric spoke to media. Here are fascinating insights from forensic psychiatrist Dr. Michael Welner on the mind of a person who