I wrote about this recently as well.

I agree that class is a major factor, but I've also known and heard of plenty of wealthy mainstream Black people being treated with disrespect by the police and others. Oprah Winfrey getting followed around an upscale store, a few years back, for example. A friend of ours was an Assistant Attorney General and was told by the cops to get out of his own neighborhood and never come back because they assumed he didn't live there because all they saw was a Black guy in a nice car and assumed he was a drug dealer.

This takes me back to what I said to you in another comment about it being about the dominance hierarchy. Those who are lower on the hierarchy (for whatever reason) are likely to be less well treated by the establishment, including the police.

However, I do think you've made a very interesting and valid point. I look forward to checking out the other stories you've linked.