I am assuming that you are speaking about the book by Bill Cooper called Behold a Pale Horse? There are other books with this title. If this is not the book you're referring to, please repost your question.
Bill Cooper is a very famous conspiracy theorist. This book is no exception in regards to conspiracy theories. Cooper goes into great detail discussing the conspiracy theory behind the John F Kennedy assassination. There are other conspiracy theories revealed as well: the rise and the fall of the Berlin Wall, the beginning and the end of the Cold War, the rise and the fall of the Iron Curtain, the invasion of the country of Panama, the war on drugs in the 1980s, the AIDS epidemic, and the existence of UFOs.
The interesting thing about Bill Cooper is that he predicted many events in the 70s and 80s before they happened. Not claiming to be a psychic, Cooper had access to government documents through his work with the Intelligence Briefing Team. Considering the information to be too important not to reveal to the general public, Cooper started to reveal these ideas one by one during many public speaking engagements. Now we are privy to his ideas and findings and research in this book.
In conclusion, this educator must admit that many of these conspiracy theories are quite extreme. For example, suggesting that the US government used the AIDS virus to control race and sexual orientation is quite unusual and a bit scary.