As an aside, the poem cited in Larry Elder's article is called "Incident" by Countee Cullen. It's still found in many American lit text books used in many US high schools. I have used it as part of a poetry unit on the "Harlem Renaissance" in my Jr American lit classes for many years.
Once riding in old Baltimore,
Heart-filled, head-filled with glee,
I saw a Baltimorean
Keep looking straight at me.
Now I was eight and very small,
And he was no whit bigger,
And so I smiled, but he poked out
His tongue, and called me, 'Nxgger.'
I saw the whole of Baltimore
From May until December;
Of all the things that happened there
That's all that I remember.
(can't post with the "inappropriate language"; spell change)