Letter from Jiverly Wong, the gunman in the Binghamton massacre, shows insight into paranoid mind

Just before he committed mass murder, Jiverly Wong laid out a litany of paranoid complaints in a letter he ended with a chilling signoff: "Have a nice day." Then Wong mailed the rambling, two-page letter to an upstate TV station and drove to Binghamton, where he murdered 13 people before killing himself.