Nazis gotta be Nazis. The Socialists are feeling their power again. The new Jews are the conservatives,
and the old Jews will be herded onto the cattle cars with them. Like the persecuted in Nazi Germany,
we will go to the showers bleating like sheep.
The first legal books (i.e., no copyright infringement or other legal problems) to be banned by Amazon were Holocaust denial books, at the behest of the World Jewish Congress.
That was in 2017, when Amazon first began banning books.
In their press release, the WJC thanks Amazon for finally listening to them (they had been pressuring Amazon since 2013), and says they have a list of other books that still need to be removed:
History is full of ironies.
Amazon's initial promise in the 1990s was to list every book ever published. Libraries even began to use Amazon, rather than the ISBN, to search for titles.
Of course, after Amazon set a precedent by caving to the WJC's demands, Amazon began to cave to everyone (on the left). Book banning became the new rule.
Being delisted by Amazon is far more powerful censorship than someone buying a few copies to burn. If a book's not on Amazon, in a sense it doesn't exist. It's like "unpersoning" a book.