Maybe the violent video games just didn't do it for him anymore and he decided to take it to the next level ? He was desensitized by all the murders and killings on TV and the movies.
The bad system must keep freedom to become evil a right while taking away the rights to learn to become good.
Did he get an A+ in school for devolving into an AMORAL animal?
That is what the evil,godless,decadent,American system is now producing with the help of bad parents.
America Babylon,teaching our children how to become amoral,decadent,godless,evil vampires and wolves on the prowl.
In our godless culture where God and His ten commandments are outlawed and the government schools major in teaching perversity and anything goes, how can anybody be surprised by the action of children fed a steady diet of violence and murder ?