What Jay said:
"The American tendency to define problems in moral terms leads us to come up not with solutions but with punishments."
I am going to make my students learn this by heart. As importantly, this is part of this post:
Although I would nitpick that "zero tolerance" is not so much apolicy as an attitude that applies only one policy to a wide variety of behaviors all redefined as essentially the same (as if you re-defined all sorts of disease as just the same and applied the same treatment, like bloodletting). One size fit all. It is morally satisfying for the moral entrepreneurs who promote zero tolerance but the effectiveness remains to be seen.