What's the single greatest threat to the Democrat party? Any significant decline in support by its most loyal demographic--African-Americans. It's been projected that an increase of only four or five percent of the black vote going to President Trump in 2020 would put into play four to six states he didn't carry in 2016, virtually sealing the election for him.

Black Democrats know this. And thus they're willing to attack in ugly terms fellow African-Americas who have the audacity to ditch the Democrats. Take Elie Mystal, appearing once again on Joy Reid's MSNBC show today. Reid ran a clip of President Trump saying Kamala Harris knocking Joe Biden wasn't so great. Reid sneered "We're giving the black lady too much credit, Elie." He replied "Black people always getting something they don't deserve, right? That's the white thing, right, that they're doing." It continued:

ELIE MYSTAL: Donald Trump Jr., talking about whether Kamala Harris is black enough is like me talking about whether Idris Elba is hitting the gym hard enough. It's dumb, it's ridiculous. Obviously, look: there's always going to be five, to ten, to 12 percent of African-Americans who have their vote colonized by the Republicans, or by Russia. And that's just--look--you can't free everybody. So like that's just going to be a thing that happens. And we have to try hard not to overreact to your black Republican friend telling you Kamala Harris isn't black enough.

Got that? Mystal disdainfully suggests that African-Americans who choose to support Republicans cannot be in full possession of their faculties. They must be poor, benighted, hoodwinked souls who have been "colonized" by insidious forces. Indeed, by his parting shot of not being able to "free everybody," Mystal implies that black Republicans are somehow enslaved.

Could Mystal possibly be any more condescending and insulting to his fellow African-Americans? Wouldn't you love to see him make that argument face-to-face with, say, Thomas Sowell, Walter E. Williams, or Candace Owens?

Mystal made his comments in the context of discussing a tweet by Ali Alexander, a self-identified African-American who argued "Kamala Harris is *not* an American Black. She is half Indian and half Jamaican. I'm so sick of people robbing American Blacks (like myself) of our history. It's disgusting....These are my people not her people. Freaking disgusting."

Donald Trump Jr. retweeted, then deleted Alexander's tweet, which has been attacked by the Left as today's "birtherism."