Godwin's Law states that anyone who brings up Hitler has already lost the argument and their opponent has won. Interesting as this stifles public discourse and expression. I believe that hate speech functions much in the same way. TAKEN FROM Godwin's Law - TV Tropes It is generally accepted that whoever is the first to play the "Hitler card" has lost the argument as well as any trace of respect, as having to resort to comparing your adversary to the most infamous mass-murdering dictator in history generally means you've run out of better arguments. Thus, once such a comparison is made, the thread is finished and whoever mentioned the Nazis has automatically lost whatever debate was in progress. This principle is itself frequently referred to as Godwin's law.