The left habitually distorts and exaggerates to demonize and discredit its opponents but squeals like a stuck pig when conservatives use colorful language to call the left out. Unfortunately, some on the right encourage the left's squealing.
As for the liberals, it's hard to take them seriously when they register their indignation at, say, Sarah Palin for her "death panels" comment, other conservatives for describing Obama as a socialist or liberals as "liberals," or, most recently, Liz Cheney for calling seven Justice Department appointees the "al-Qaida Seven."
Liberals are the ones who knowingly lied in saying that "Bush lied; people died," that supply-side tax cuts are "just for the rich" and that Bush left people on the rooftops in New Orleans after Katrina because they were black. These weren't just harmless rhetorical barbs; they had and continue to have serious, substantively damaging consequences.
Nor are the above descriptions by Palin, Cheney and other conservatives a matter of tit for tat or a case of the left's wrong mitigating the right's. The conservatives' statements above are different because they have a strong ring of truth, and they are not just gratuitous; they serve the purpose of calling attention to what is truly going on.
I'm not advocating that we be uncivil or mean-spirited, but that we have the guts to tell the truth, using difficult-to-hear language when necessary. I dare say our failure to speak frankly and boldly has a lot to do with the horrible predicament we're in in this country. Speaking a little more truth to political correctness would be helpful. But the left's tactic of whining and crying foul at anything it chooses to be offended by, echoed by genteel enablers on the right, intimidates many from expressing truth for fear of public condemnation.