In many environments violence is a part of life and necessary for survival.
One hypothetical scenario of millions:
You live and grow up in a high-crime area. Someone attacks you, a family member, etc. You defend yourself to protect your own life or that of a loved one. A cellphone video records the end of the encounter where you appear to be the aggressor.
You get an assault charge.
You work your ass off, beat a variety of odds, and make something of yourself. Many years later you’re passed over for a position simply because you came from an environment the person doing the hiring can’t possibly fathom. A person who has clearly never been in the position of “it’s me/my wife/my child or them”.
Same for ex-military. Are you aware that the United States military is often considered to be the “only way out” for a substantial portion of the enlisted? That something like 90% of military roles are non-combat related?
I’m not a violent person either but this is an extremely naive, judgmental, and downright discriminatory position.