The pattern -
1) Dems build up a candidate supposedly as a progressive disruptor
2) Leftists point out a number of red flags (racism/misogyny/sexism/etc)
3) Dems nominate the candidate and claim they have moved to the left
4) The red flags turn out to be true
5) Dems then tell the left that they have to support this candidate because the Republicans are worse
6) Dems lose the election, blame the left rather than their own lack of values.