Some don't seem to understand that if they are going to express an extreme or false or hateful sentiment others also have the right to express their thoughts about those who would express extreme or false or hateful sentiments. It's called the marketplace of ideas. In fact, I really believe the more some people, like wingnuts, express themselves, the more they are revealed to be extremists, alarmists, delusional and hateful for hate's sake and therefore hurt their "cause" or "causes". By the way, some of those extremists seem to follow fear mongering talking heads like Limbaugh and Beck (there's the tie in to the above cartoons).
Here's another example, wingnuts can express their belief that Obama was born in Kenya. And I can express the view that those "birther" wingnuts are sad, delusional morons. The wingnuts have the right to express themselves freely and so do folks, like me, that want to criticize them. Ain't it great?