Why do you think the title is racist in tone??
Are we that brainwashed that anytime we see the word 'white' in a headline that it must be seen as a pejorative.
Even if one does not want the country to be majority white, it is hard to argue against the inference of the headline that this country will no longer be as united or english speaking in the not too distant future.
By the way, I agree about Buchanan. He has lost nearly all his credibility, much back in the 1990s and the remainder as of late when he stepped up his venting against Israel.
This Buchanan article, however, is spot on the money.