Political correctness and people who call things racist are the greatest threats to free speech, says Andrew Breitbart in this video from Reason (zoom ahead to 1:35):
This is a nearly pure expression of conservative anti-anti-racism, or the idea that accusations of racism (against white people) are far more harmful than actual incidents of bigotry against minorities (with the corollary that minorities are guilty of tremendous racism against white people). Smearing Shirley Sherrod is perfectly OK, but calling out Breitbart's race-baiting is beyond the pale and harmful to free speech.
In other words, as is the case with many conservatives, "responsibility" is great when it means denying help to poor people but is preposterous when it comes to owning up to your words and actions.
-- Jamelle Bouie