Media violence and the repercussions of behavior has been a topic discussed in many of my psychology classes. I remember in Intro to Psych this topic was brought up and we had to discuss if we thought violence portrayed in the media (video games, tv, movies etc.) could truly influence the viewers behavior.
Studies have shown that males react more quickly in their aggression after viewing violent media. Males are often portrayed as the aggressor as well. Showing why studies have shown that females are more accepting when males are violent, because it is something they have somewhat 'normalized' from television or movies.