Admittedly this is the first I've heard of this but it strikes me as people trying to cash-in on the "Jesus' life and the mysteries that surround it" craze (Priory of Sion, Gospel of Judas etc.) that has sprung up since that damn DiVinci Code came out.
Well, things hit the boiling point over there. Pim Fortuyn, etc. They seem to have their share of problem with Muslim immigrants, but I would never be so racist as to suggest that we have similar ones.