I write two kinds of diaries...
Progressive diaries and coalition politics (Democratic Party) diaries.

These are distinct groups with a distinct set of goals. Your horror story is exactly the danger that the party faces and exactly the thing that the reviled party establishment is so derisive of us for.

The progressive mission is to change minds, not send them packing.

The Democratic mission is to win elections with candidates who are good and capable, incorruptible people.

...But you know all that. At this point probably better than I do.

Your mission right now is to recharge, and get about the humble, even humiliating work of bringing all of those eschewed people back in.