“Gestapolemics” (Gestapo + polemics) is a neologism that was printed in the Washington (DC) Post on February 28, 2013, defined as “calling your political opponents Nazis.” The term “Gestapolemics” appeared on Twitter on November 7, 2010.
 
Related sayings/terms include Godwin’s Law (“As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches 1”) and Jon Stewart’s “I disagree with you, but I’m pretty sure you’re not Hitler.”
     
 
Wikipedia: Gestapo
The Gestapo (German pronunciation: [ɡeˈstaːpo, ɡəˈʃtaːpo]; abbreviation of Geheime Staatspolizei, “Secret State Police”) was the official secret police of Nazi Germany and German-occupied Europe. Hermann Göring formed the unit in 1933.
 
Twitter
Wesley Long
‏@wesleylong  
NCCPR Child Welfare Blog: Getting Beyond “Gestapolemics:” What ... http://bit.ly/cYmXdo
2:16 PM - 7 Nov 10
 
Twitter
NCCPR‏
@NCCPR  
Child welfare workers: Nazis? NO.  Well-meaning but clueless? Sometimes. Getting beyond “Gestapolemics”:  http://bit.ly/cprblog #Journalism
9:10 AM - 8 Nov 10
   
Washington (DC) Post
We give you our words: The neologisms
February 28, 2013
(...)
With POLE: Gestapolemics: Calling your political opponents Nazis. (Chris Doyle, Ponder, Tex., 2010)
 
Twitter
Leor Hackel‏
@leorhackel  
“Gestapolemics: calling your political opponents Nazis.” Neologisms from http://articles.washingtonpost.com/2013-02-28/entertainment/37350601_1_neologisms-portmanteau-words … MT @AdamMGrant
1:01 PM - 15 Sep 13