“ great I love when we agree”
I think most disagreements really boil to small differences.
I dont think anyone disagrees that black people were discriminated against, or that they were aves (property) of other people or that they were sold by their own native people as slaves and brought to the united states.
You mention that what happened in the past is a cause for the current disadvantage of the black person.
That may or may not be, but we may disagree if this now means that people as a group were not exposed to this disadvantage, should kneel, beg for forgiveness and wash the feet of the black person.
Furthermore, the average american today is not really at a greater advantage if they are white.