[bayesianhorse]

There is every reason for society to attempt to enforce social rules. In the case of PC, those social rules revolve around avoiding offensive behavior, which is quite a good idea, once you think about it for a while...

Just imagine the worst nickname anyone ever gave you, and having it replace your real name. That's about the level of rage people can feel about "nigger", "Injun", "raghead" or whatever you might imagine.

If you are transmitting over a channel where some amount of politeness is the standard, violating this standard will and should have consequences.