I get that people want to stop the spread of Nazi propaganda, but making it so that people can't purchase Mein Kampf just because of the ideas that it contains is reminiscent of a dystopian novel. Where are independent researchers supposed to get access to these books in their printed form? The internet is already subjected to massive censorship and historical revisionism. It's a bit troubling to think of a world where Amazon determines what information is and is not available to the public.