Well, there are some extremely ugly and never-spoken of examples out there.
For instance, white men when imprisoned are often singled out for rape by the black men who are the majority in the prison. There is considerable evidence that such experiences was instrumental in the horrific Jeffrey Daumer and James Byrd (Jasper, TX) murders. In each case the white perps were apparently raped repeatedly by blacks in prison and retaliated against innocent blacks after their release.
Not that you would have heard about this in the regular press. As opposed to a similar situation where the races were reversed.
This is also the main reason the famous Aryan Brotherhood thrives in prisons. Non-members of this awful group are at the mercy of black and hispanic gangs. White prisoners have very strong incentive to join the AB.
Have you followed the mau-mauing of the police in Cincinnatti? No other word for this than black racism.
I believe, as you do, that racism among ordinary Americans is disappearing. But there are large numbers of people whose entire emotional and financial basis would disappear if this becomes generally recognized. Many of these are tragically found among those who are now called "civil rights" leaders.
When a problem begins to go away, those who have invested their lives in that problem begin to focus more and more energy on inflating the few examples still remaining. This may be one reason why many of the recent examples of "anti-black racism" have been proven to be self-inflicted. If your whole sense of self comes from being a victim of racism, you have strong incentive to invent some if others don't oblige you.