It's not even just books, if they hate somebody or something in general it's usually because they were told to through a media article. You can see this if you're patient enough when you look at comments pages or reddit when they're chatting amongst themselves about somebody like Trump.

That's a pretty good point. It's pretty interesting that right wingers aren't as bad as this, because a lot of them are headline-skimmers as well (like boomercons). Maybe that's because righties have pre-existing belief systems and aren't trained to follow the cult of Expert-Managed Everything like lefties.

This is why I know and I'll post to anyone who will read it it, leftists are never there to debate in good faith, it's all a power play to them.

The youtuber Decoy Voice put this pretty well. "[Libs] don't want you to solve anything, they just want you to be wrong."