Here's how I explained it to my wife the other day:
First, you must have lazy, stupid, cowardly people in charge. Then, you must have some number of the people in their charge doing something they should not be doing. Then, there must be another action that is not wrong but bears some passing resemblance or is a precursor to the act that is wrong. Then the people in charge, who are too stupid to notice the difference, too lazy to make the distinction, and/or too cowardly to take responsibility, will ban both. Then a man grabs a girl by the arm to lecture her for running in front of his car and become a registered sex offender, because grabbing a girl by the arm is the same as rape. And a boy is suspended for a drawing of a gun, because, after all, it's the same as a gun. And a girl is sent to detention for hugging a friend, because it's the same as having sex in public.
