Here's a really interesting account of someone who was accused of being a "self loathing Jew" by a guy named Nick Cohen (who claims to not be Jewish), using the pseudonym "Baruch Spinoza" (sneaky sneaky)...

http://jewssansfrontieres.blogspot.com/2005/11/nick-cohen-playing-dissident-jewish.html

It does look like the enforcers of the party line are starting to get a bit desperate.