"Outside of that, Mrs. Lincoln, how was the show?" But, seriously, it wasn't just Clyburn. Biden secured major black democratic endorsements everywhere. And, he did the "traditional" groundwork in black communities: he advertised on tv and black-owned radio stations and put out yard signs. He has decades of support in black communities, so he really didn't have to do as much. Regardless, my point is that Bernie did far less than he needed to do. That can be true regardless of what Biden did.