(JNS) The online retail giant Amazon has banned the sale of most editions of Adolf Hitler’s “Mein Kampf” and other Nazi propaganda books after being pushed to do so for decades by leading Holocaust-education charities and Jewish groups, The Guardian reported on Monday.

Amazon informed booksellers that they will no longer be permitted to sell a selection of Nazi-authored books on the website, including Hitler’s autobiography and children’s books that incite anti-Jewish sentiment. In one email sent by Amazon, those selling second-hand copies of “Mein Kampf” were told that “they can no longer offer this book” because it breaks the company’s code of conduct.

The retailer formerly defended itself by advocating for free speech and the need for students to understand Hitler’s thought process. Amazon would not comment on what prompted it to change its decision.