This 20-year association with Wright calls into question everything about Obama: his truthfulness in his serially adjusted stories of what he knew and when he knew it; his judgment in choosing as his mentor, pastor and great friend a man he just now realizes is a purveyor of racial hatred; and the central premise of his campaign, that he is the bringer of a “new politics,” rising above the old Washington ways of expediency. It’s hard to think of an act more blatantly expedient than renouncing Wright when his show, once done from the press club instead of the pulpit, could no longer be “contextualized” as something whites could not understand and only Obama could explain in all its complexity.