Amazon de-lists book examining the science and the social impact of the progressive gender identity movement: Amazon has removed Ryan T. Anderson's book titled "When Harry Became Sally: Responding to the Transgender Moment" which critiques the modernist perspective on gender identity and sex. "I hope you’ve already bought your copy," tweeted Anderson, "cause Amazon just removed my book 'When Harry Became Sally: Responding to the Transgender Moment' from their cyber shelves.... my other four books are still available (for now)." When the book's title is searched verbatim on Amazon, instead of presenting Anderson's book a book titled "Let Harry Become Sally: Responding to the Anti-Transgender Moment" appears in the results while Anderson's book is nonexistent. The book is currently not listed on Anderson's author page on Amazon either. Anderson's book had previously been on Amazon and The Washington Post's bestseller lists.