No you are thinking of the right one, but the black guy didn't have self-awareness. It was the Chinese guy telling him how they squandered all that they had, as he sat their silently unable to muster up anything back.

Its a great doc simply because its Chinese made about dealing with Africans. So it has none of those hangups the rest of the West has when talking about Africa and openly shows how useless and stupid they are, as this disgruntled China-foreman tries to tard wrangle them into basic labor.