I'm not certain if the person who will primary Biden is a known name right now, but the shutting down of discussions of whether or not Biden should be primaried as candidate deeply entrenched in America's project of racial capitalism doesn't sit right. If it's not Emmanuel, Rice, or any of the other ghouls (hell, the Sunrise Movement already had to mobilize against a pick) , it's his clear plans to ignore, co-opt, and cast aside the Black and Indigenous activists on the ground. He doesn't need to govern again to be a known entity.