A systematic accounting of the nature and specifics of the coming Greek-style tragedy facing the Democrats this summer can be read here. Tragedy, defined as the undoing of a man (or a party) by his own flaws can be seen unfurling all around the Democrats this season.
The thrust of it:
The tragic flaw of the Democratic Party is the hubris that allows it to style itself as the only force interested in the welfare of minorities and the poor, and the only party committed to real democracy. It is not accustomed to its own internal processes being subjected to much critical media scrutiny.
Now this is the kind of theater that makes politics so interesting.