I assume he thinks it's particularly apropos at this time
The theory goes that today's schools teach nothing of an afterlife or good versus evil, just of a legal system and jailtime as consequences. Thus we have kids who have given up on life who don't care about consequences in this world and we wind up with a spate of shootings like we've seen.
I'm not saying I agree or disagree with that sentiment, the point is to stir up some dialogue.