Must be intentional. An accidental library fire doesn't count.
A single person burning a few of their own books doesn't count. Must involve several people and a large number of books, somewhere public or semi-public.
Only events after market creation.
Related questions
Another related event: In 2022 a USA church did this. https://www.theguardian.com/us-news/2022/feb/04/book-burning-harry-potter-twilight-us-pastor-tennessee
@Yev Hmm. Tempted to say no, since book burning is primarily symbolic, and burning Kindles doesn't seem quite as meaningful.
@MichaelWheatley Well for one thing, it doesn't actually make it harder for people to access that content.
@IsaacKing Presumably the corollary of that is that burning books that have been digitized also doesn’t make it harder for people to access the content, it’s just symbolic.