When I was in college, there were some engineering students from Nigeria who did not look kindly upon the urban black “culture” in Newark NJ. If anything they were more British than the British.
I also worked at a big corporation in Stamford CT. There was a very stressful meeting one day which had to do with some very bad financial disclosures and going forward. The end of the meeting was very ugly. A black procurement staffer mentioned to my boss(who was also black) that "we brothers need to watch out for each other". My boss went ballitstic, and another meeting was held with senior management and that was the last we saw of the "Brother".