Dem Candidates Bash Obama; Biden: That's Bizarre

First, the Obama-bashing was near to the last straw for me.
Second, I agree with Biden that it was bizarre.
Third, I disagree with Biden that it was bizarre: Obama was a liberal; Democratic ideals aren't liberal anymore. They're anti-liberal / progressive.
Fourth, I disagree with Biden that there's some sense in which things have relevantly changed that means that we should move "beyond" liberalism to progressivism. The cutting-edge Dems have just gone over the edge. The moderate Dems are right about that.