14-year-old Amari Peterson was attending a child's birthday party in Stockton, California, over the weekend when gunfire broke out. He was one of four people killed, most of them children. Sitting down with CBS Sacramento, Amari's heartbroken father describes the anguish of rushing around the party and trying to save his children, only to discover that his 14-year-son on the ground bleeding after having been shot in the chest. Stockton Mayor Christina Fugazi said the shooting was gang-related, b