For More Information See:
https://en.wikipedia.org/wiki/Main_Core
https://www.scribd.com/document/42037…
https://www.cnn.com/2019/01/25/tech/y…
https://fas.org/irp/eprint/rightwing.pdf
http://documents.scribd.com/docs/1xdu…
https://www.scribd.com/document/16232…
https://www.splcenter.org/20111006/an…