Amusingly, I feel like it's you that hasn't internalized where we disagree.
I feel like you entirely missed the point about past injustices being *intentionally* leveraged to maintain racial oppression.
If it's intentional, and predicated on race, it's racist. And as it relies on continuing racial prejudice on the part of the electorate, there is still something to be done as far as education is concerned.
If you disagree, it would've been nice for you to engage with the specific points I raised - especially that extended quote from Atwater that explained how the GOP employ economic means in order to "punish" blacks - and explain why you disagree that this is present-day racism writ large.
Your example of Nigerian immigrants forgets that these people have a network of support that is also outside America, it forgets that they have (and their support network has), as you say, an internal locus of control from being raised in a supportive and nurturing environment, etc., etc.