Race

...is certainly true that liberals have an unattractive tendency to casually impugn their foes as bigots. The Democratic primary's war of attrition between Hillary Clinton and Barack Obama devolved into a tedious donnybrook of accusations of sexism and racism. If Clinton had won, her supporters would no doubt have spent the last nine months discovering sexist motives among her critics. Since Obama prevailed, though, liberals have busily studied the opposition for signs of racism.
(...)
The victimology of the leftist is bad enough--he is beset by racism. But the persecution complex of the conservative has managed to top that. The conservative is a double victim--of false accusations of racism and of racism itself. [Rush] Limbaugh moans, "Frankly, the biggest problem I face in the current climate of political correctness is that I'm color-blind about it."

Jonathan Chait, The New Republic, 2-Nov-2009