When liberals accuse you of suppressing their freedom of speech, it means that you are criticizing them, or perhaps even censoring them. But when you censor conservatives or suppress their freedom of speech, it is called a speech code. Calling President Bush a liar is a courageous act of speaking truth to power, while criticizing the liberal stance on the war is questioning their patriotism.
It is well worth your while to read the entire post. More logopathology here.(hat tip: gumshoe)