Peter Beinart argues that race is holding Obama back in the polls, and urges him to take a high-profile stand against race-based--and in favor of class-based--affirmative action to assuage white fears.
That might be a good start. But it doesn't do much about myths that he's a Muslim and a foreigner who doesn't love the flag, etc., and I suspect those things are tied up with the race question in a way that such an affimative action gambit wouldn't remedy.
--Michael Crowley