Unprotected Speech, is speech that is not protected by the first amendment. Fighting words that are likely to provoke a hostile or violent response from an average person, fall under that category. It can most definitely be a crime. Trust me, most would just prefer to handle it themselves...but things like that aren't said face to face.
Then why aren't all members white supremacy groups being charged with this crimes? Why is the Westboro Baptist church allowed to continually use this speech?