"Prominent liberals liken it to Nazi propaganda,"
Phew. Must have taken up both of their combined brain cells to think up that one.
They Lose.
Godwin's law
From Wikipedia, the free encyclopedia.
Godwin's law (also Godwin's rule of Nazi analogies) is an adage in Internet culture that was originated by Mike Godwin in 1990. The law states that:
As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches 1.
There is a tradition in many Usenet newsgroups that once such a comparison is made, the thread is over, and whoever mentioned the Nazis has automatically lost whatever argument was in progress. Godwin's law thus practically guarantees the existence of an upper bound on thread length in those groups. Many people understand Godwin's law to mean this, although (as is clear from the statement of the law above) this is not the original formulation.
It is considered poor form to arbitrarily raise such a comparison with the motive of ending the thread. There is a widely-recognized codicil that any such deliberate invocation of Godwin's law will be unsuccessful. See Quirk's exception below.