There was that one Moorish knight, Sir Morien. From the 13th century Dutch saga Moriaen, we get this description of the eponymous knight:
He was all black, even as I tell ye: his head, his body and his hands were all black, saving only his teeth.
Of course, this doesn't mean that there actually were black people in 6th century Britain, but one or two black people in an Arthurian story isn't out of place.
We live in a world where nailing your scrotum to the ground is considered art. Just because someone says it's art doesn't make it appropriate for an elementary school.
That's not how I read it. It's like how someone who lost a member of their family in the Twin Towers might dread 9/11. Obviously that person can't die again, but it's a painful reminder.
Now how much emotional resonance events that are long out of living memory can have is another question.
Transitioning is more like taking the chair, cutting off the back and one leg, and then claiming it's just as good a seat as this stool.
The animated TV show is. The live-action movie is horrible for everyone.