The University of Alberta had difficulty years back over a book entitled "The Hoax of the Twentieth Century". It had been on the regular shelves, but both copies were destroyed. (For those of you unfamiliar with the book, it was a bunch of trumped-up crap denying that the Holocaust ever happened.) Finally, the U of A purchased two others and put them in Special Collections.

It is difficult to refute what hate-mongers say if ya can't read their material.