“Why are we still asking is this guy a white supremacist?” Lee said to CNN’s Anderson Cooper.
Docu-series will mark 400 years since first enslaved Africans were brought to the New World.
“I’m sorry for people who felt let down by that moment,” the rapper says.
“I think that my personality and energy mirrors Nat Turner,” he says.
The seven tracks were released Friday.
“When you hear about slavery for 400 years… That sounds like a choice,” he said.