We're all familiar with the gender swap test, but for some reason lots of people seem to ignore it. What if we did a different swap?

How to prevent child abuse:
If you're drunk, don't beat your kid.
Only parents can stop child abuse. Don't hit your kid.
Real parents don't beat their children.
Etc.

Maybe replace parents with mothers and fathers, just to drive home the point that we're including women too. Then when people get offended, bring up the real men don't rape posters.