Here’s my ideologically motivated historical gloss on the divide between establishment Democrats and the Bernie wing of the party:
There was almost a European socialist revolution in 1848 but the (GUESS WHO!?) liberals sided with the conservatives and all the socialists got thrown out of Germany. The only people left in power were blood and steel conservative Otto Van Bismark dickheads. Fast forward 66 years and Europe is throwing its entire male population into the meat grinder.
Meanwhile those German socialists came to America, fought for the Union in the Civil War, started making cheese and sausage in Wisconsin and got a bunch of unions going.
So I guess vote for Biden at your own risk.