Why is being black in fandoms so hard

The mlp fandom [racist] ( “pinkie pie is pink”under every black hc pinkie pie)

The Vocaloid fandom [racist] ( black teto/ black miku- you draw them black and kkk is personally having a meeting in your comments)

The sonic fandom [racist] ( club chaos- people calling it gangster music and that it was over stimulating)

The cosplay community [racist] (just go to a black cosplayers comment section genuinely sad)
When WE draw a character with no canon skin tone black; all hell break loose. On a serious note the whole pinkie pie situation made me so mad and sad cause why is white the default for characters, and when so much your pinky is white they said finally a normal one. WE just wanna have fun like everyone else without the random racism for existing.