Perry is on a bit of a roll. It appears that the UK is need of an ACLU, and perhaps a First Amendment as well. The UK apparently has a semi-funtioning Nazi Party whose members are getting arrested for “thought crimes”.
As Perry notes in his title, Nazis are pretty easy pickings. Totalitarians routinely go after easy targets—other totalitarians they oppose, pornographers and the like—to establish a precedent for broader moves against freedom. The UK is looking increasingly hostile to free speech—the canary in the coalmine for freedom, you might say.
Update: In a later comment to the same post, Perry, correctly in my estimation, says that imams, as well as their opponents, should be allowed to say whatever hateful things they wish to say. Fellow Brits should likewise be able to call them morons for saying as much. It's the exchange of ideas, however repugnant.
Another Update: Surprisingly, I managed to forget to include this quote from Jefferson, which seems wholly appropriate:
"It is error alone which needs the support of government. Truth can stand by itself. Subject opinion to coercion: whom will you make your inquisitors?" - Thomas Jefferson