Literally the dumbest thing I've ever read. I saw the thread you're talking about and it was disgusting. This person got a microaggression warning for fetishising black people and treating black skin as an "aesthetic" that can be taken on and off, was given links in the warning message to educate them as to why this was offensive to so many people, and then was banned for using a highly offensive word towards black people that the vast majority has scrubbed from their vocabulary following desegregation. Saying that you "support BLM" and then proceeding to say a word that most would equate with a slur is performative actism. Do not speak on what you do not know about, because clearly this person has you convinced that racism is okay.