The political arena IS the public arena.What makes me twitch is name calling.  If your reasoning is correct then all the n-word means is black person...no big deal right? Let's ignore the political and historical context it come from.. The alt right specializes in it. This tactic is only ever used to attempt to shut down any civil exchange of ideas. Apparently the alt right and Trump supporters aren't actually interested in discourse they just want to hide behind it to spew their fear and hate.