Censorship has a variety of points along its dark spectrum- from the outright removal of books to mere challenges; both fiction and non-fiction works are frequent targets of the flames of ignorance for various reasons.
Sometimes a book comes along that, by virtue of being so controversial, causes lines to be drawn in the sand by its supporters and opponents, and those caught in the middle are left scratching their heads in confusion.
Holy Blood, Holy Grail is one such work.
Read on and Share the Knowledge:
http://bbark.deepforestproductions.com/column/2011/10/09/banned-books-awareness-holy-blood-holy-grail/