Why do people have so much aggression? What causes aggressive behavior? by Taylor Bennett | Mar 18, 2019 | Anger Management, Behavioral Issues, Mental Health Topics Aggression is hostile or violent behavior. It’s a woman yelling at her son for accidentally spilling his milk on the carpet. It’s a child pushing his friend down on the playground because she was playing with his favorite toy. It’s a girl snapping at her boyfriend because he didn’t invite…