As so often happens in politics, the quarrel between Mr. Obama and Mrs. Clinton came down to a matter of direct objects. Both “reject” and “denounce” are transitive verbs — they act upon a direct object — but the candidates weren’t talking about the same objects. The object of Mr. Obama’s denunciation was Mr. Farrakhan’s opinions, particularly his anti-Semitic comments, whereas Mrs. Clinton was urging her opponent to reject the minister’s support. The thrust of Mrs. Clinton’s challenge was that her opponent was merely highlighting a particular disagreement with Mr. Farrakhan, while still accepting his — and his organization’s — backing.

From an article in the NY Times on Clinton and Obama’s differing arguments regarding Farrakhan. Noting this for it’s interesting perspective that they’re essentially arguing about different direct objects.