This area is called the hypothalamus. Its function is to coordinate responses like anger. The relationship between anger, rage, and violence, and psychopathology that is abnormal, or unnatural in human behavior and experience. People demonstrate their anger reactions in different ways. Similar to most human behavior, violence has a meaning that it only seems senseless or meaningless to the extent that we are unable to understand it.
Most violence starts the fiery human emotions of anger and rage.
Some violence is driven primarily by as Friedrich Nietzsche referred as the will to power . In other words, rage. Rage is an instinctual and defensive reaction to severe stress, or physical threat. This is an automatic reflex that people share with animals. This response to serious threat is referred to by Walter Cannon as the fight or flight response.