Laughing, it turns out, has a lot of power - we attribute to the person who laughs attributes of self-confidence, of social, of a person who is not afraid and stressed.
Better Management - Laughter and humor are a fairly effective management style.
That part of his ability to influence people and lead is in his sense of humor.

The power of laughter can also be used negatively - the social group creates tremendous pressure on the weak by "laughing at him."
Evil in the movies also laughs wickedly and only becomes stronger and increases our terror.