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.
To put it short, for me as a German, if I‘d know someone went out of their way to get Mein Kampf, I will assume -unless you‘re a historian and need it for research- you‘re at minimum a Nazi sympathizer. Noone goes into that much trouble unless they have very deep interests and if you‘re not an academic historian, that level of devotion/motivation to get that book doesn‘t leave much else room for why you want it.