The Catholic cemetery in the little town where I was born is very interesting. All my family is buried there, but on one particular side of the cemetery.
Because the cemetery is segregated by Irish Catholic and Irish Italian. You can immediately see the difference without knowing what the side you are on, because Irish people traditionally have very small stones in the ground, often not even standing up. Just simple markers.
But the Italian tradition is very different with much more elaborate headstones, monuments and even mausoleums.
And, well... No black people at all. That’s just the way it worked in the days before that particular cemetery filled up.