And like really, what else is he gonna do? What would his core constituency among black regular democratic primary voters in the South be? He's not gonna get a hearing from Bakari Sellers-esque business progressives, he's not gonna get a hearing from the old CRM crowd that has since yielded to the practicalities of politics, &c. His only real, practical choice is an end-run.
Black supporters of Bernie Sanders:
Nina Turner: was begging for the Clintons endorsement in 2014, then trashed them as the destroyers of the Democratic party two years later. Endorsed for governor of Ohio a Trump apologist, conspiracy theorist, Fox News Democrat.
Cornell West: called Obama an "Uncle Tom", praised Trump as "authentic human being", voted in the general for Russian plant Jill Stein.
Killer Mike: NRA mouthpiece that went on NRA TV and attacked Parkland kids the day they marched for their lives.
You really have no shame.