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?
The Imperialist Aggressors Can Never Enslave The Heroic Vietnamese People by Ho Chi Minh works well. “ACHIEVEMENTS RECORDED BY THE DEMOCRATIC REPUBLIC OF VIET NAM” has some info during a repressive colonial regime.
Also From General Strike to Uprising, Part 1 | Lessons of the Moscow Uprising (1906) by Lenin. Audiobook has some clarifying commentary. Has information about swaying the opinions of soldiers, and how to move forward from protests.