Fear is a natural response to threats; it is part of our biological legacy to have a "fight or flight" system. Emotional systems are targeted by political marketers seeking to manipulate voting behavior.
If you were wondering what paranoiac smear artist would be the first to attempt to name Obama as the man who guided Hasan to his murderous rampage yesterday, the answer -- naturally! -- is Jerome Corsi.
After receiving an email smear, one Indiana voter wrote: "I am outraged that the Republican Party sent this kind of smut to my home ... There is no place in this election [for] this garbage. It will not work; not this time."