I want to learn how to manage in a potential future with extreme political suppression of communists / socialists, like making it impossible to work anywhere, arbitrary arrests, physical abuse, potential torture etc Are there any Marxists that wrote about that?
On the technological side I have already been doing all of that for several years now. I use 4get for searching and deleted all social media accouts, Google and Amazon. I even plan to use Linux on my phone in the coming weeks.