[Opinions] Re: I absolutely agree with you.
I think it's great that you're starting to notice. I date an African-American man and I am acutely aware these days of events (including many city events, I don't mean private parties) where he is the ONLY black person there or one of the few. My state is close to 40% black, the most of any state.
We went to a wedding recently of two of my friends- both raised here. There was not a single black person among 150+ people except my partner. That is the segregation and racism these days...it's not so much people outwardly rejecting black people but that their paths never cross. My university has one of the most famous "pre-game/tail-gating" events in the South and everyone is ridiculously dressed up, people have chandeliers in their tents and fountains and stuff- it is like spot the black person. This thing of so much pride for white people in my area...I don't know how they'd react if a black family set up a tent because that just is not done. White families have their tent in a spot for generations...it isn't a place for POC. It is implicit but powerful.