You shouldn't be violent.
Neil is in the park just walking when some guys playing football accidentally hit him with the ball.
Neil wants to react to being hit with the ball.
Neil throws the ball back and tells the guys to be more careful in the future.
Neil runs after the guys who threw the ball and tries to kick and punch at them.
The guys are sorry that they hit Neil and profusely apologize to him.
The guys are terrified that Neil is a nutcase and fear for their safety.