Have you seen the list of books fascists want to ban? I think GP's point was exactly to emphasize that when we're talking about "dangerous books", we're talking about books that indicate you might not be a toe-lining member of The Party. We're talking about any book that any powerful person decides is some sort of threat, even if it's merely a threat to their ego.

Not dangerous at all! An analogy would be comparing a pea-shooter to an automatic rifle, or a thimble full of shandy when compared to a gallon of vodka. There is not a dangerous word in my local library!