Meet Obama's Grandfather

Why did his grandson express such contempt for him?

UPDATE:

“How can the African defeat the white man,” Onyango would tell his son Barack Sr., “when he cannot even make his own bicycle?” In Onyango's words, "The white man alone is like an ant. He can be easily crushed. But like an ant, the white man works together. His nation, his business--these things are more important to him than himself....Black men are not like this. Even the most foolish black man thinks he knows better than the white man. That is why the black man will always lose."

But not if he's running for President of the United States, is half white and presents himself as a post-racial man, able to bequeath racial absolution to whites for the sins of their ancestors.