dangerous precedence.
I remember hearing the story that one of the reasons the KKK use the hood is so they could be anonymous. The old superman radio show that was on in the 40s are so decided to take on the KKK and make them bad guys which only made people even more embarrassed to be KKK member since all the kids were playing Superman against the KKK.
Shaming is a very powerful weapon.
It can certainly be misused (against homosexuals, for example) too.