Amazon deleted the books from your Kindle if you already owned them. This is a digital book burning. Libraries and schools are removing them as well. The President of the United States, who is supposed to uphold the first amendment, is removing it by statute.
This isn’t a McRib, you can reproduce a McRib, I can buy the meat and the sauce separately or make it from scratch at home. You can’t (legally) copy a book hence why book burning are so insidious.
Other left wing groups that burned books in the past were Nazis and Communists, even before they got to power through semi-Democratic ways, but they didn’t shy away from violence (compare Antifa/BLM) and cancel culture (compare the Nazi term Lugenpresse) that is the way we are going in the US.