Last year I wrote a piece on how to manage the carnage that has occurred too many times in our schools. My conclusion was that there are preventive things we can do, like tightening up background checks and effectively enforcing gun sales rules. There are also on-site reactive solutions, like having armed guards patrolling school hallways and using metal detectors.

I recently came across a column written by a retired Florida lawyer who has been an activist against the marketing and sale of adult…