I’ll go with the low-hanging fruit: Mein Kampf. I’ve read it, cover to cover. As a piece of propaganda, it’s good. As an example of good writing? Absolutely not (though I will admit I have only read it in translation). Oh, and the whole fascist, racist, and generally shitty worldview of the author that he infuses into the text. And the fact that the author is literally Hitler. You 5-star that book? You’re a Nazi. Period. And as a Jewish person, I don’t look too kindly on them.
Opposing opinion here, but I actually think there are a lot of good reasons out there to a have a browse through the bible.
For example for people from countries with a long history of christianity it would be useful given it’s part of that countries history and the content provide some context for historical events (for example, it‘s kind of good to know basics about the bible, it‘s content and meaning in society to understand the reformation).
Reading the bible doesn‘t automatically turn you into a reactionary hardline christian. Same way that this is not true for other religions. I‘d argue that knowing the bible actually helps standing up against reactionary hardliners, since they tend to cherry pick the bible and mold the words to further their own use. They can do that because not many people read the bible. If more people read the bible themselves I think less people would become reactionary hardline christians.