It is always sad (and heartbreaking) when tragedy strikes and you discover, after the fact, that the evil person involved was an out-of-control youth with a disturbing background.
Like the Orlando killer, Omar Mateen. He was disciplined dozens of times for unruly and aggressive behavior. He has constant outbursts and classroom disruptions. He could not conform to classroom and school rules. He was verbally abusive, rude and aggressive and yelled obscenities as a third-fourth-and-fifth grader.
The lack of discipline in the schools helped develop a monster.