I have known two black immigrants, one a lawyer who was born and raised in Bermuda, and one a very educated man from Cameroon.
Immigrant blacks do not have problems climbing the ladder of success in this country, because 1) they are smart, 2) no one ever told them they couldn't succeed, and 3) they don't wallow in self pity because they are black.
Our home-grown blacks are taught from an early age that whites are the enemy, and that a black kid has no chance to succeed, and that school is a waste of time.
And the people to blame, mostly, are the public education teachers, but also the parents. But we can't change the parents, so we must get through to the public school teachers that they need to stop whatever they are doing to destroy the confidence of their black students.