Many years ago there was one staff in my supermarket that always targeted me at the checkout register because of my skin colour. She's the typical racist old white lady. I wrote a nasty review about her in Google. And voila, I've never seen her in the supermarket anymore.
I mean, when I said hello, she ignored me, didn't say anything back and gave me a nasty hateful look.
There was another racist old white lady in the post office too who always gave me unfriendly service.