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.
Great thoughts about the completely opposite applications of laughing! Thanks for sharing, @nirgf. : )