neo-Nazi's discover that they are of jewish heritage.

[Pope Pixie Pickle]

http://edition.cnn.com/2010/WORLD/europe/09/23/poland.jewish/

I lol'd a little.

[The Johnny]

What about principles? They should clearly kill themselves.

[Cain]

One Neo-Nazi living in New York did, when he found out.

Srsly tho, Polish antisemitism usually has more to do with Catholic sentiment than the more, uh, "biological" hatred the original Nazis had.  I don't know for sure about the Polish Neo-Nazi scene, but if they are into the more Catholic kind of antisemitism, they can simply point out they're not Jewish because they are good Christians (barring all that stuff about loving thy neighbour and turning the other cheek, naturally).

[E.O.T.]

THAT'S ACTUALLY

          how it all started. It's known as the 'Bill Cosby' effect.

[Jasper]

Voted among top ten most pleasingly ironic ways for people to die