CIA officer Frank Snepp gives a revealing interview in 1981 outlining the CIA control of the media. This is all part of Operation Mockingbird that was exposed in the 1975 Church Committee hearings

Inside Operation Mockingbird – The CIA’s Plan To Infiltrate The Media (allthatsinteresting.com)

Church Committee Full Report:
Church Committee : Church Committee : Free Download, Borrow, and Streaming : Internet Archive

CIA Heart Attack Gun: