I know how you feel. I spent years being abused by people I had never harmed in any way. I've had my best friend of over a decade spontaneously cut me out of his life. I've spent years being colossally angry, with each new incident summoning all the previous hurt as well, compounding the anger. I've wanted to rip some people limb from limb, so I can totally sympathize.
One thing I've learned over the years is that resentment is extremely toxic. It eventually wears you down, where you're unable to escape its misery. The hurt does not go away on its own, you have to move past it. I wish I could tell you how, but I don't really know. I'm still not over some of mine. In many cases, time has rendered the incidents irrelevant, but I can't say there isn't still anger buried, waiting for the next idiot to dig it up. Still, I can at least get on with my day, now. Nevertheless, in the few incidents where I have been able to forgive the other party (I'm really not good at this), I've felt a lot better afterwards. "Sorry" is a powerful word. Alas, I wish I knew how to forgive the unrepentant, if only for my own sake.
I hope you feel better soon.