While being interviewed by MRCTV's Joe Schoffstall at the Occupy DC rally a Larouche supporter admitted that the liberal media falsely smeared the Tea Party by saying Larouche signs of Obama wearing a Hitler mustache were representative of the protests. (language warning)
So it seems that even Larouchites where well aware that their Obama/Hitler signs were not representative of the Tea Party. Even they noticed that the liberal media was using their signs to smear the Tea Party. Of course, they weren't the only ones who recognized this at the time.