I have dealt with this kind of thing, even though I am white, because of sexual orientation.
I had a group of guys conspire against me until the boss had it with all of the shenanigans and decided it was much easier to get rid of me because I was the "catalyst" in his eyes. It was when I was much younger and things were a lot dofferent in those days regarding protections against discrimination.
I've often thought it would be a hoot to go back and find the ringleader after all of these years and punk him out but good. Leave him stranded naked in the middle of the forest in the dead of winter covered only in duct tape or some such. Revenge is a dish best eaten cold. I usually forgivem but I NEVER forget. In this case, I've done neither.