No, I didn't watch a 50-minute video that likely is irrelevant to the post you quoted.
I respect your honesty.
“When the immigrant from Eastern Europe meets the Negro in New York,” Dr. W. E. B. Du Bois told us, “he is curious. He has never before seen a colored man; he therefore gazes at him as something new and novel. In his next step, through the process of Americanization, the immigrant will be told to avoid the Negroes, not to have any dealings with them, etc., etc. and later the final step, he will unconsciously begin to absorb the current prejudices against Negroes.”
[…]
The Martyrdom Of The Negro
“But before the immigrant goes any further, he should be stopped and warned. The millions of Negroes in America represent the exploited and persecuted group, just as these wanderers from Russia and Poland and Romania represent that of their countries. And the persecuted group gets little chance to be understood by the foreigner. The press, society, all the domineering forces of the state are against it” — and for the first time in our conversation the Doctor’s brown eyes flamed up.
(L.HonorsJune 7/ 2017, How The Forward Introduced Jews To W.E.B. Du Bois, [site] Forward).
Read more:
How The Forward Introduced Jews To W.E.B. Du Bois
