I am a bit of a libertarian when it comes to civil liberties -- I flinch at any circumscription of speech, even when it is noxious. Still, for a very long time I was troubled by my readings of the rise of Nazism in Weimar Germany. Weimar was a liberal democracy, albeit a very weak one, and efforts to repress the Nazis on the basis of their ideas were rejected as a infringement of their civil liberties. There is a part of me that is afraid of a patently false but persuasive idea gaining currency in a liberal democracy, when it ought to have been quelled in the cradle somehow. But maybe the lesson to be taken from the rise of Nazism is that it was not merely the ideas promulgated by the Nazis that propelled Hitler to power, but the cunning and brutal employment of paramilitary force -- that it was not just tracts, but truncheons that made Nazi Germany a real force.