Ok, I wasted a few hours doing a thorough internet research and here is what I found out:
The video is from a press conference Berlusconi gave 10th March 2010 that had nothing to do with any book see
http://www.globalpost.com/dispatch/italy/100311/silvio-berlusconi-pdl-election-candidates If you look at the photo you see a scene that also appears in the video.
The sub-titles in the video are wrong, nobody in it talks about a book, even my Italian is good enough to understand that.
Currently there seem to be no books that are banned in Italy, see
http://en.wikipedia.org/wiki/List_of_books_banned_by_governmentsSo yes, it seems that it is a marketing plot / lie to get sales figures up ;-(
As for the story, yes I read it, really not scary in my opinion ...