I am a white guy, but lived in an area of the US that is over 80% black. I did not feel what you are describing at all, so I would say no - it's more about how you view yourself in that situation.
shrug I guess you could say the same thing to the original author (it's just in your head). If you lived in a place that is 80% black, at least in the south, and have not run into a black person that is not very racist towards white people, then I'm not sure what to tell you - this wasn't really a "feeling"; it's what people said and how they acted towards me vs others. I actually get WHY as how THEY are treated by some white people, not that it makes it ok.