I don’t imagine that the violent video games can be helpful but they are not a cause. The cause reduced to simplest terms is entitlement. When people feel entitled to break laws, they rationalize that their lawbreaking will somehow benefit others. The mass killer theorizes that his actions will produce a social result that will somehow improve society.
Although the left wants to pin this phenomenon on the right, we can see that the larger context of entitlement is a leftist concept — doing things for the social good, breaking laws to achieve a desired end, are essentially leftist concepts. If the best form of the political right is libertarian then one’s primary concern is that one should be free but that implies that others should also be free. Your freedom to live as you please strengthens my freedom to live as I choose. The last thing a believer in that ethos would contemplate doing is a random mass murder.
No, this is really at the left’s doorstep, not ours. They continue to stress that extraordinary action is needed to solve problems of their own invention. This resonates through the education system and much of family life. Any young person nowadays is bombarded with messages that “action” is required to “solve problems,” and nobody spends any time analyzing whether these problems are real or imaginary, or if the proposed action will have any actual effect. So we live in a sort of magical fantasy world where it is not a long step at all to imagine that firing a weapon at strangers will bring about social change.
There is also not enough emphasis placed on psycho-sexual factors, the mass shooter finally feels empowered, strangers do what he wishes (there’s a reason why female mass killers are such a rare phenomenon, any female can probably bend some if not all strangers to do her wishes). Since they choose not to enable, they are sentenced to death.
When you add poorly designed treatment through toxic medications to this volatile mix, and the moral vacuum created by atheism and new age philosophies, the outcome is entirely predictable.