I would not call red (Marxist) culture “white culture”. It came about as reactionary towards traditional white culture, albeit with the intent to create its own form of feudalism.
I was using not my terms, but those of black activists. By their definitions, Obama was raised in about as “non-black” a culture as can be imagined.
Obama's father was never around.
His mother was leftist, but he was raised largely by his (white) grandparents.
I've seen comments that they were leftist, but little actual evidence.
Do you have evidence that they were?