I dont think Biden will survive. If he does, Trump will crush him. Biden has too much baggage due to his longevity in politics. His competitors will exploit his record.
This whole issue about busing as a way to integrate neighborhoods in America has been a failure. This does not excuse Biden's tacit accommodation with southern racist congressmen.
I find it interesting that Ms. Harris, who I like and believe might be the democratic nominee, see herself as "Black". Her mother, I believe was Indian, while her father is Jamaican. I believe emphasizing her "blackness" is a political move to steer Blacks away from Biden. She is therefore exploiting her "blackness", but this is all well and good in politics.