It's not clear what this means for what's left of the Iraqi polity, but it seems like good news to me:
While the Mahdi militia still controls most Shiite neighborhoods, early evidence that Shiites are starting to oppose some parts of the militia is surfacing on American bases. Shiite sheiks, the militia’s traditional base, are beginning to contact Americans, much as Sunni tribes reached out early this year, refocusing one entire front of the war, officials said, and the number of accurate tips flowing into American bases has soared.
Shiites are "participating like they never have before," said Maj. Mark Brady, of the Multi-National Division-Baghdad Reconciliation and Engagement Cell, which works with tribes.
"Something has got to be not right if they are going to risk calling a tips hot line or approaching a J.S.S.,” he said, referring to the Joint Security Stations, the American neighborhood mini-bases set up after the troop increase this year.
“Everything is changing," said Ali, a businessman in the heavily Shiite neighborhood of Ur, in eastern Baghdad, who, like most of those interviewed, did not want his full name used for fear of being attacked. “Now in our area for the first time everyone say, To hell with Mahdi Army.'"
Maybe the occupation will slowly become less onerous, as the resident assholes overplay their hand. Here's hoping.