Here's something you may not know: Dr. Ben Carson is black.
Of course, I'm being a little cute here. The only way you wouldn't know he's black is if you were blind and only listened to the news.
For instance, Tuesday on MSNBC's "Morning Joe" -- a program that often serves as a kind of artisanal boutique of inside-the-Beltway conventional wisdom -- host Joe Scarborough expressed his consternation over Dr. Carson's popularity. "I just don't get it," Mr. Scarborough said more than once.
Remarking on some Carson ad he didn't like, Mr. Scarborough said, "This guy is up 20 points in Iowa? ... It's baffling."
Co-host Mika Brzezinski kept...