Well, it's because they are leftists who just happened to have been born Jewish. That's why. Duh.
So this paragraph is quite good:
"Personally, I don’t care if Ellison ever did or still does hate Jews. He’s entitled to love and hate whomever he wants. What worries me is that a leading member of the extreme anti-Israel wing of the Democratic Party is poised to become the party’s chairman. What disturbs me is that the mainstreaming and elevating of this man—who, at the very least, is clearly more enthusiastic about Louis Farrakhan than he is about the State of Israel—is being done with the support of Sen. Chuck Schumer, and of organizations that claim to represent the interests of American Jewry."
On the good side, if the Democrats do this, it will really clarify that Jews who stay in the Democratic fold have made their choice once again: leftism over Judaism, utopianism over sanity and realism.
(And enjoy this piece showing Greenblatt eating a sh&t sandwich.)
Leftist Jews will still be shrieking Hitler! Swastika in Bathroom! at Trump when the last of Europe's remaining Jews are slaughtered by Islamic terrorists.