You have to meet people where they're at. In my experience no one will ever read any book you recommend unless they specifically ask you for recommendations. They might click a link to a short video. Otherwise try to summarize the specific point you want them to understand with relevant quotes or examples and avoid scary words like socialism or Marx unless you want to shock them.

Hopefully if its someone you care about enough to put in repeated efforts enough of what you're saying sinks in they start doing their own research, then they might ask for advice. I've had this work on coworkers a few times but its rare. Remember your working against years of conditioning here, it won't happen overnight