Godwin’s Law: as an argument grows longer and more heated, it becomes increasingly likely that somebody will bring up Adolf Hitler or the Nazis. When such an event occurs, the person guilty of invoking Godwin’s Law has effectively forfeited the argument. Violated most often by modern national socialists.
Godwin’s Law II (`Iron law’): under similar heated circumstances, again when the malfeasor arguendo has not a leg to stand upon, he/she/it will accuse the opponent a `McCarthyism’. Always broken by Democrats, liberals, newspapers, magazines, Leon Pitts, and other like-minded hysterical moonbats.
Addendum: See Orwell’s definition of “fascism”: http://orwell.ru/library/articles/As_I_Please/english/efasc
Example: “This fascist cup of Starbucks coffee tastes like burned camel urine! And a fascist dromedary, at that.”