Metal 999999999999999 Metal 99999,
I believe that their aggression is generrel turned against fellow human beings because they feel inferior.
It may sound paradoxical, but often people who treat others inferiorly with full intention feel inferior themselves. Their degrading behavior towards (supposedly) weaker people makes them feel better about themselves.
These people like to call themselves number 1 (like METAL1)
(never as number 2,3 or 4).
Gladly these people cheat also with the indication of the height in the identity card around at least 5 cm.
They grow quasi over themselves, before they disappear then again in the invisible widths and the anonymity of the Internet.
The feeling of inferiority is based on a lack of self-confidence and low self-assurance. Downers feel stronger when they can exert power on others - in whatever form.
If a person experiences frequent humiliation and slights in their personal environment (e.g., family, relationship,, high school), they may develop a need to humiliate and bully another person themselves - sort of what happened to me, shall happen to you.
You should get help. Psychotherapy/psychosomatics) - to help patients gain more self-confidence in everyday life.