I don’t think violent entertainment directly causes more violence, but I will say it doesn’t help the situation. Now don’t get me wrong, movies like say John Wick wouldn’t be the same without the violence, however, if someone is already in a violent mood and watches violent entertainment, they may get ideas to go out there and get out their aggression by being or reenacting the violence they’ve seen.
You are welcome, thank you for asking the question

Great point! Thanks so much for your comment!