I’ve been loath to admit that the shrieking lunacy of the summer — the frantic efforts to paint our first black president as the Other, a foreigner, socialist, fascist, Marxist, racist, Commie, Nazi; a cad who would snuff old people; a snake who would indoctrinate kids — had much to do with race.

I tended to agree with some Obama advisers that Democratic presidents typically have provoked a frothing response from paranoids — from Father Coughlin against F.D.R. to Joe McCarthy against Truman to the John Birchers against J.F.K. and the vast right-wing conspiracy against Bill Clinton.

But Wilson’s shocking disrespect for the office of the president — no Democrat ever shouted “liar” at W. when he was hawking a fake case for war in Iraq — convinced me: Some people just can’t believe a black man is president and will never accept it.