In 2016 when Bernie refused to concede, Obama invited him to the White House and both he and Biden asked him politely to stop aiding the GOP by claiming Hillary was not the legitimate winner. But Bernie claimed--without evidence--that there would be a contested convention.

The impact of that counterfactual narrative created the "Bernie or Bust" phalanx. 25% of Bernie voters voted for Trump. Another portion voted 3rd party. To this day many claim that the nomination was "stolen" from Bernie, even though he lost in a landslide. This harmed Hillary.

Refusing to acknowledge the facts and promoting a false alternative narrative because you think you should have won weakens people's belief in government. Trump is doing that now. He has Bernie's precedent and sees it didn't hurt Bernie--it hurt Hillary. Trump thinks he can win.

When men violate norms & standards women are held to rigorously, it restructures the tone in our real politik and makes it harder for women to access power. The GOP fears a future Kamala Harris run. This is as much about her as it is Biden because Hillary won the popular vote.