Why Is Rev. Wright Wrecking Obama's Campaign?

The opening sentence of Bob Herbert's column :

"The Rev. Jeremiah Wright went to Washington on Monday not to praise Barack Obama, but to bury him."

Later:

"The question that cries out for an answer from Mr. Wright is why — if he is so passionately committed to liberating and empowering blacks — does he seem so insistent on wrecking the campaign of the only African-American ever to have had a legitimate shot at the presidency."

My proposed answer to the question:

Rev. Wright's claim to legitimacy rests on the mistreatment of blacks by whites. But if a black becomes President of the of the U.S., that would be evidence that blacks are not so badly mistreated by whites and Rev. Wright appears to have lost his legitimacy.

Rev. Wright is enjoying enormously the attention he is getting which would not happen except for the youtube snippets and Obama's candidacy.

What Wright needs is for the dispute to continue and ultimately for Obama to lose. Wright is doing his utmost to achieve both of these objectives.