Malignant Narcissist:
Social psychologist Erich Fromm first coined the term “malignant narcissism” in 1964, describing it as a “severe mental sickness” representing “the quintessence of evil”. He characterized the condition as “the most severe pathology and the root of the most vicious destructiveness and inhumanity”.[4] Edith Weigert (1967) saw malignant narcissism as a “regressive escape from frustration by distortion and denial of reality”; while Herbert Rosenfeld (1971) described it as “a disturbing form of narcissistic personality where grandiosity is built around aggression and the destructive aspects of the self become idealized”.[5]
https://en.wikipedia.org/wiki/Malignant_narcissism
Social psychologist Erich Fromm first coined the term “malignant narcissism” in 1964, describing it as a “severe mental sickness” representing “the quintessence of evil”. He characterized the condition as “the most severe pathology and the root of the most vicious destructiveness and inhumanity”.[4] Edith Weigert (1967) saw malignant narcissism as a “regressive escape from frustration by distortion and denial of reality”; while Herbert Rosenfeld (1971) described it as “a disturbing form of narcissistic personality where grandiosity is built around aggression and the destructive aspects of the self become idealized”
BINGO.
Genocides usually follow such Malignant Narcissists who become leaders of nations and tribes. Starting with their own people first.