How does the author suggests white Americans come to terms with the realities of being an individual and a human being in "Down at the Cross"?

The author suggests that one way white Americans can come to terms with all those realities is for them to accept, understand, and live in and with Negro experiences and perspectives. "In short," he says, "we, the black and the white, deeply need each other here if we are really to become a nation - if we are really, that is, to achieve our identity, our maturity, as men and women."