He is properly describing the fall off democracy and the rise of fascism.
He started out as a respectable member of society, only to be overwhelemed by inside doubts about his reasons for being here. He flat out rejected religion as a way of life, as we all should. He knew that he could do better. But in fact he couldn’t.
He spent all of that time doing heavy introspection only to discover that Modern Society is/was crippled, a three ring circus if you will. The only escape would be the complete and total revocation of personal freedoms and the installation of Totalitarianism by the Chosen Few. He uses Beatles music here of course, as a timeline to describe this sorry chain of events, and possibly as a reference to genetic engineering and/or junk science.
Heh.