I'm thinking a lot of the increase black Trump vote-he still lost overwhelmingly in that demographic, btw- was resentment at Biden's sense of entitlement regarding black votes- the way that, even though he based most of his political choices from the mid-Seventies to the late-Nineties on appeasing the white backlash, Biden acted, at all times, as though he was OWED the black vote. I'm thinking a large chunk of the black community will never forgive him for the "if you don't vote for me you're not black" thing.