Probably was all the Freemasons and their infiltration of government bodies and agencies --->

James Tilly Mathews air loom https://publicdomainreview.org/2014/11/12/illustrations-of-madness-james-tilly-matthews-and-the-air-loom/

Judge Schreiber https://en.m.wikipedia.org/wiki/Daniel_Paul_Schreber

John Nash - brilliant mathematician who belived government agents were harassing him https://www.princeton.edu/news/2015/05/27/tragic-meaningful-life-legendary-princeton-mathematician-john-nash-dies

Nilometer in James Bridle's chapter "Secrecy" in The New Dark Age https://www.sciencephoto.com/media/978683/view/view-of-the-nilometer-cairo-egypt-1802

The Paranoid Style https://en.m.wikipedia.org/wiki/The_Paranoid_Style_in_American_Politics