They are dead souls who have descended from narcissism into malignant narcissism, meaning their conscience is seared and their capacity for empathy and charity lost. Malignant narcissism negates restraints that result from empathy and charity. This motivates them to not just dehumanize and scapegoat others but to spiritually and physically crucify them….to murder them—or have them exterminated by other diabolical means such as a man-made famine after the fashion of Stalin or simply pave the way for ISIS to do the job.
Ann Barnhardt has expounded at length about what she calls Diabolical Narcissism:
http://www.barnhardt.biz/diabolical-narcissism/