Sue Klebold, mother of one of the Columbine High killers, revealed her “deep sense of guilt” for what her son Dylan did in her first TV interview with ABC’s Diane Sawyer.
Demi Lovato shares her sympathy for people who have mental disorder and urges people to place priority on mental health.
The body of the primary suspect in a mass shooting in Pennsylvania that left six people dead was found in woods less than a mile from the shooter's home.
