By Zorianna Kit
LOS ANGELES, June 2 (Reuters Life!) - Mass school shootings fill TV screens with bloody images, newspapers with heart-wrenching accounts from terrified students, and pose searching questions about the motives of the young killers.
But the movie "Beautiful Boy", opening in U.S. theaters on Friday, puts a rare spotlight on the anguished parents of a teen gunman.
Maria Bello and Michael Sheen star in the independent film as Kate and Bill, whose already fractured marriage is further tested
