Why do you think he resorted to violence? Was he a naturally violent child or did his childhood experiences in some way shape him to become this way?

Answer this questions related to the video attached. Who can we hold accountable here besides Kip? Why do you think he resorted to violence? Was he a naturally violent child or did his childhood experiences in some way shape him to become this way?
https://www.youtube.com/watch?v=OVrhFlj80Ng