You might want to look at Umberto Eco's latest book. His fictitious Simone Simonini was raised by a grandfather who hated Jews and after several plot twists ended up forging both the Dreyfus letter and the Protocols of the Learned Elders of Zion. It is unlikely that the same hand forged both documents, and certainly that it was this figure, but SOMEBODY forged these documents, as Eco points out.