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?
Introducing him to Frank Marshall Davis, for one? Obama identified Davis and his grandfather as “friends”.
Do you have evidence that they were?
Stanley and Marilyn Dunham moved from Kansas to Mercer Island, WA expressly so that young Stanley Ann could attend a school system that was led by a professed Communist.
I've always considered this fact a particularly telling one.