This is bizarre. The headlines are already written: “racist Trump attacks black woman moderator.” Although, I see she is biracial. Once again we see POTUS being poorly served by his White House staff.
She’s liberal and not White.
That’s all that matters.
Your blame is misdirected. Look at the unilateral change of the 15 October Debate. The “Commission On Presidential Debates” (CPD) did it entirely without White House or RNC consult, the very definition of a 'Swamp Party' action. All Trump can do is to say that he won't participate. The CPD is beyond help, future debates should have a moderator chosen by each candidate at each debate.
Trump attacks stupid black TV peope like the CNN dumbass Don Lemon and LeBron James all the time. He don’t care. If they are acting stupid, Trump will call them out.
So far, Trump is doing far better with black votes than he did in 2016, despite attacking idiots like Lemon.
At a WH presser: https://www.mediaite.com/online/trump-rips-nbc-after-kristen-welker-asks-if-hes-giving-upper-hand-to-putin-possibly-worse-than-cnn/
In a journalists’ discussion: https://www.c-span.org/video/?449396-1/panelists-discuss-history-covering-white-house
Mr. President do not do this.