When in doubt... blame the Jews.
That's the approach that Keith Ellison's old gang in the Nation of Islam took. It's the approach that his new prog buddies are taking.
There's the reality
1. Obama's people worked hard to swing votes from the DNC candidates that didn't make it to his guy, Tom Perez. It's why Keith Ellison didn't pick up their votes and Perez did.
And there's the easy scapegoat... the Jews.
2. Blame the Jews
That's the theme of assorted smears on prog sites like Vox. While Keith Ellison's long history of anti-Semitism was no doubt a factor, his ascension in the party made it very clear that the Democrats aren't troubled by a candidate with a history of anti-Semitism.
But blaming Obama is dangerous. Addressing the power struggle between Bernie Sanders and Barack Obama would be too potentially explosive. Exactly what would it mean that Obama shot down the candidacy of a left-wing Muslim who had served as the stalking horse for the party's hard left? How are the Dems supposed to address the fact that Obama is the new Bill Clinton trying to take another death grip on the party backed by corporate money and an army of loyalists? What does that do to Hope and Change?
It's much easier to blame the Jews.
Blaming the Jews takes the form of claiming that Islamophobic Jews upset by "unfounded" claims about Ellison, which are never meaningfully explored or addressed, sank his candidacy. That lie is not only anti-Semitic, it's cowardly. Rather than deal with the real events taking place in their party, the left would rather trade in anti-Semitic conspiracy theories.
The Democrats have become a party of anti-Semitic cowards.