I have worked in places - and quit after a week or two because of how employees were treated by supervisors. I sometimes thought, "I wouldn't be a bit surprised if Mr. ___________ came to work & started killing people." Some supervisors & managers use their authority to harass employees & they never know how much harassment & bullying an employee can take before he snaps. An example:
This postal employee was the victim of constant bullying, harassment, ridicule & even sabotaging his work. Female employees would make fun of his bald, chubby appearance by pretending to invite him to company picnics & parties & asking him for a date, then laugh at him.
His "Supervisors" mixed up the mail in his mail bag, then wrote him up & threatened to fire him when he couldn't deliver all the mail on time.
After several months of that, he came to work with his .45 pistol & killed 14 coworkers & supervisors - only targeting the ones who tormented him, while telling others, "You never hurt me; just leave."
An example of "Poking The Bear," I'm sure his idiotic co-workers didn't know he was ranked "Expert Pistol Shot." Some of his victims were hit from 60 yards as they tried to flee.
In less than fifteen minutes, postal worker Patrick Sherrill pursued and shot several coworkers, killing 14 and injuring another six, before committing suicide. The deadliest workplace shooting in U.S. history at the time, Sherrill's attack inspired the American phrase "going postal".