In any case, see Karl at Patterico's Pontifications, "For Whom the Downgrade Tolls":
In sum, the S&P downgrade marks a post on the road where progressive demagogy loses its power. The downgrade marks a post on the road to extinction for 19th-20th century progressivism. That’s why the Obama administration — and true progressive ideologues — made S&P their first target, however futile the gesture.RTWT.
I wouldn't separate the partisan left from the ideological left so much (Maddow is both, for example), but it's a really perceptive essay otherwise.
UPDATE: Linked at Atlas Shrugs and Yid With Lid. Thanks! Also linked at Blazing Cat Fur!