As the only books in it? Then it'd be best marketed as the "white supremacist conspiracy theorist starter kit". Throw in Mein Kampf while you're at it.
Just because a book is controversial doesn't make it good. No books should be banned, ever. But some books don't need promoting in a curated collection, either. They're useful for people doing literature research and understanding certain subcultures, but unlike the first list, they're not something useful and interesting to promote to a mass market, which makes them not good choices for a project like this.
Books are comparatively tiny, as data goes. If you have the space for a comprehensive list of every book in the public domain, by all means include those in it. But if you're making a curated list of a handful of books, and it's that list? That's certainly a choice.
See also this comment: https://news.ycombinator.com/item?id=48549512