Serial killers and politicians share traits
http://www.examiner.com/article/serial-killers-and-politicians-share-traits
"Interpersonal traits include glibness, superficial charm, a grandiose sense of self-worth, pathological lying, and the manipulation of others. The affective traits include a lack of remorse and/or guilt, shallow affect, a lack of empathy, and failure to accept responsibility. The lifestyle behaviors include stimulation-seeking behavior, impulsivity, irresponsibility, parasitic orientation, and a lack of realistic life goals.
What doesn't go unnoticed is the fact that some of the character traits exhibited by serial killers or criminals may be observed in many within the political arena. While not exhibiting physical violence, many political leaders display varying degrees of anger, feigned outrage and other behaviors. They also lack what most consider a "shame" mechanism. Quite simply, most serial killers and many professional politicians must mimic what they believe, are appropriate responses to situations they face such as sadness, empathy, sympathy, and other human responses to outside stimuli.
Psychopaths are not sensitive to altruistic interview themes, such as sympathy for their victims or remorse/guilt over their crimes. They do possess certain personality traits that can be exploited, particularly their inherent narcissism, selfishness, and vanity. Specific themes in past successful interviews of psychopathic serial killers focused on praising their intelligence, cleverness, and skill in evading capture."