I did not see the interview, I did read your article. Based on what you quoted Brokaw saying, he was referring to the resistance he encounters of “white” Americans in embracing Hispanic Americans into the American family. He mentions the fear he hears of white Americans who do not want intermarriage, ie: brown babies. He did not say he did not want brown grandchildren. He has been a reporter his entire life and he was reporting his impressions of the problems Hispanics, presumably new Hispanic immigrants, face assimilating into American culture . The brown baby comment is code for the prejudice they encounter,a distaste for intermarriage and mixed race children. Further Brokaw advises that integrating the Hispanic families into the wider white communities, making all the children learn English, will help overcome this prejudice which may be based on white ignorance and fear. I don’t know if he is correct, but this is not a racist observation, perhaps just a naive one.
I am not a great fan of Tom Brokaw but when he was the chief news anchor (NBC?) he seemed fair. I never felt any bias to one group or another. And smearing him as a racist as a result of this interview is unfair, and highly biased.