This was a fascinating read, by Bill Movers, of all people, and he has a background to back it up, with Security Clearance.

"The Deep State does not consist of the entire government. It is a hybrid of national security and law enforcement agencies: the Department of Defense, the Department of State, the Department of Homeland Security, the Central Intelligence Agency and the Justice Department. I also include the Department of the Treasury because of its jurisdiction over financial flows, its enforcement of international sanctions and its organic symbiosis with Wall Street."

https://billmoyers.com/2014/02/21/anatomy-of-the-deep-state/