Because you said something to the effect of “the kid could have been an NBA star” in the topic about the kid who was shot by the cops. That’s quite a leap to make about a 12-year-old boy who the articles said liked both basketball and football and wouldn’t be able to play either again, a 10+ year prediction that no lawyer working to secure an award for his family would make due to the high improbability of any adolescent making the pros in the future.
Frankly, I highly doubt you would have made such a statement about the victim if he was white. The moderator here and others agree that you came off as stereotyping. If you’re too thick to get that, you’re best off sticking to your promise to LANCB (which, of course, they never do – the last word of their wisdom must be heard!).
By the way, we’ve all heard the excuses of: not being an American; English not being a first language; being a poor communicator; being a sweet summer child; etc. many times before from you and others who, despite those self-acknowledged shortcomings (in the context of an American site), continue to make sweepingly offensive proclamations here and then find themselves consistently shocked when there’s negative feedback. Eventually they either get banned or, like you, request anonymisation. The thickest of them always come back.