All African-Americans are also Americans. If they choose to identify some part of their heritage in addition to their American heritage that's up to them.
My nominee for extremely racist term we should all stop using: "______ of color."
The solution IMO is to stop focusing on what you perceive makes us different and instead focus on what makes us similar. That's it. To that end, recognize the fact that the concept of "race" is a lie invented by European colonial empires and that objectively it does not exist in humans; that we are all the same race, we are all part of the same family, there are no discrete cogent groups of people different from one another in their culture or history or collective experience as transmitted through their DNA. Stop using terms like "black" and "white" which are really irrelevant and inaccurate anyway. Start talking about people as if they were people. Individuals.
This doesn't have to be a left or right thing. In my lifetime I've seen this idea migrate from one to the other. In my youth, in the USA, "conservatives" used to include old school racists and segregationists. and "liberals" were preaching that we should be color-blind (which was great, we made an enormous amount of progress with this philosophy). While I was in college I started to see this idea crop up that to be color blind was somehow wrong.
Strategy: start with the biggest cities in America (#s 1, 2, 3, 5, and 8). When those were taken care of, move on to the biggest cities that were left south of the Mason-Dixon line and also around the rust belt (everything else except Boston).