Suspect Amari Pollard,was in an 'ongoing dispute' with one of the 2 people killed, police say
                                
                                
                                    (Newser) -
                                    The mass  shooting  that killed two people and injured five others after a high school graduation in Richmond, Virginia Tuesday was a targeted attack and the "result of an ongoing dispute," police say. Graduate Shawn Jackson, 18, and his 36-year-old father, Renzo Smith, were killed,  CNN  reports. The...