When needed, the natural state of things will correct any perceived problems that may be experienced. There's never a need for fixing things by force. It will literally just work itself out.
Now, does this mean you'll like it? It doesn't matter what you like. The majority of things you come in contact with will never actually matter, and you shouldn't ever concern yourself with it. People taught you otherwise because they were needy. That's just how they chose to interact with the world. They wanted to make it seem like you have to save them, so that they could remain as children at any age.
Revenge is performative. Telling someone off is the same as yelling at a wall. You may be certain they can hear you, but there's no proof of them understanding. Nor is there proof of them wanting to change anything in their direct control. You can choose to take this into account with all interactions from here on, or ignore the facts and play the fool for the remainder of your existence.