Each circle represents person/groups idea of appropriate behavior. People/groups interact with each other.

Politically correct behavior aims for the shared region, but inevitably, it misses it. People/groups can only aim so well.

Politically incorrect behavior does not aim for the shared region, but inevitably, it hits it occasionally.

Every person/group involved likes the shared region. The bigger the better!

The people/groups involved tend to try to change the others idea of appropriate behavior to theirs via operant conditioning to make the shared region bigger. The conflicting people/groups tend to be resistant to this change. It becomes a schematic tug of war.

If both regions completely overlapped, there would be no difference between politically correct and politically incorrect behavior between the people/groups involved. Ironically, everybody would like this!

Empathy is the ability to understand and share the feelings of another. Therefore, empathic behavior maximizes the shared region, so it is the solution to the political correctness/political incorrectness debate. However, being empathetic towards others is a lot easier said than done for many people/groups.

So, debates over politically correct/incorrect behavior will probably always exist because both sides tend to hypocritically try to get the other side to be empathetic without being empathetic themselves.