Their PLAYBOOK
We all know about Rules for Radicals. Before Saul Alinsky there was Antonio Gramsci. I did a deeper dig into it when Hussein took power to understand what was happening to our country.
Here are a few randomly sourced intro articles about it
https://stream.org/dangerous-marxist/
https://www.americanthinker.com/articles/2014/04/antonio_gramsci_take_over_the_institutions.html
https://www.powercube.net/other-forms-of-power/gramsci-and-hegemony/
And here is the playbook of all playbooks. The Gramsci Reader.
http://ouleft.org/wp-content/uploads/gramsci-reader.pdf
It's not for everybody but those who really want to understand the playbook ought to scan this book along with Rules For Radicals. (Skip all the cheerless, dreary and convoluted Marxist theory and focus on the action plans.)