Amy B. Dean explains why the inability of Karen Lewis to oppose Rahm Emanuel due to her health is a huge loss, not only on a personal level to all those who love and admire her, but because she was a threat to the Democratic political establishment that has severed its ties with the labor movement. Once upon a time, there was a coalition of Democrats, labor unions, and civil rights groups. The rise of the business-minded politicians like Rahm Emanuel, Dannel Malloy, and Andrew Cuomo has shattered that coalition. Such right-of-center politicians rely on Wall Street and corporations for the campaign funds they need, and they actively fight labor unions. Karen Lewis would have revived the sturdy progressive coalition that once commanded American politics. Will there be others to take her place?