sociopath

sociopath |ˈsōsēōˌpaθ|
noun
a person with a personality disorder manifesting itself in extreme antisocial attitudes and behavior and a lack of conscience.

It seems to me that the definition when applied to political discourse may very well be a descriptor of the many disgruntled partisans on the right. After the new health insurance reform law was signed this week by President Obama an increase of extreme antisocial attitudes and behavior by opposition party members, and followers was noted.
In defense of their rhetoric instilling fear, and hate among the conservative flock leaders of the GOP have let it once again be known that any resemblance to the truth that the media may point out will be met with dissemination of facts, and derision for having simply stated the truth. The "lame stream media" as rejected vice presidential contender, and drop out Alaskan governor Sarah Palin accused just yesterday in a speech for soon to be ousted from office Senator John McCain was a "ginned up controversy". Surely she had no information in which to base this remark on. Information is only chatter by those that oppose her quest for power. Even if she were aware of the 10 year old little girl in the back of a car being run off the road it simply could not have to do with the bumper sticker on the rear of the car. It couldn't possibly because "our incitement to violence is simply a metaphore for voting". We vote the bastards out!
Well someone just voted with the front end of their SUV.

The lack of conscience?
Maybe it has to do with blaming the messenger for making it sound as bad as it really is.