Frustration–aggression hypothesis
The frustration–aggression hypothesis, also known as the frustration–aggression–displacement theory, is a theory of aggression proposed by John Dollard, Neal Miller, Leonard Doob, Orval Mowrer, and Robert Sears in 1939, and further developed by Neal Miller in 1941 and Leonard Berkowitz in 1989. The theory says that aggression is the result of blocking, or frustrating, a person's efforts to attain a goal.
Source: Wikipedia — Frustration–aggression hypothesis (CC BY-SA 4.0)