That's what the justice system is for. If you don't like the way it works, then vote to change it. Look how Luis Rossman is doing it for a good example.
But shooting people you don't like as vengeance for what you perceive is wrong, is some third world banana republic shit, and no such country where this is normalized is remotely safe or functional, look at Africa and parts of Latam.
You think you want that but you don't actually. IF you do sincerely want that, then I sincerely hope you get what you want, but both ways for you and only you, while the rest of us stay isolated as spectators.