A picture, in this case a painting says a 1000 words.
For gods sake , give the racial narcissism and not very subtle bullying self pity a rest. Try listing the sins of the blacks. You know ...as an intellectual exercise. It might do wonders for you.
Is it not true that history is written by the victor. Colonial powers wrote the history, conveniently leaving out the history of the vanquished. Such as the elimination of the American Bison in order to solve the "Indian problem". Perhaps the person with the roller is removing the white wash and restoring the history that was unwritten & untaught. I should think less optimistically. Correction & inclusion culture.
Propaganda.
But if it reflected YOUR worldview you'd hail it as great art.