Yes, I do think that book can be dangerous, bu I do think it does depend on the person who is reading the book. Lots of books have Emotional story lines and there are lots of people who do get offended very easily and are not so happy about it. And back then the Nazi party did not want any information that was against them or made them feel embarrassed at times. SO thy effeminately did believe that books where dangerous. And they also probably wanted to look better then every other political party in Germany at the time. And people did not want to be harmed by them so they just followed the order and did what the Nazi guys said.