How do you deal with REVERSE Racism?

I live in a city where I, as a white woman, am a minority. I often experience prejudice and racism (since high school on through to my career). I do not want to have a victim mentality, but I am having a hard time dealing with people who are outright nasty because they are allowed or feel entitled because they have been discriminated against. It’s like kid gloves with a controversial issue. It is unfair & it makes me angry. Some of best friends throughout my life have been a different race than me. I even mentor a African American young lady whom I’ve taken into my home without any descrimination (she has her own bedroom).
I’ve especially experieced this behavior from older black women.

Additional note: a supervisor told me at work that I was the wrong color for a position I was putting in for.
How do you mentally rise above? I can see this treatment changing me, I sometimes expect it and it isn’t warranted.