There's just no pleasing them.

Indeed.

When have Democrats not been eager to accommodate the Right, to sacrifice their ideological beliefs and partisan goals in pursuit of post-partisan harmony, to jettison the "Left" in order to attract the Mythical, Glorious Center? When haven't they done exactly that? Isn't that everything they've been doing for two decades now, what has defined the Party at its core? In what conceivable way is this new, and why does anyone expect that it will generate different results now?