I believe a firm foundation in the philosophy of law is necessary to understand much of this. There are many potholes along this path.
I found that reading the first few chapters of Invisible Contracts was useful. Researching the topic "Lex Mercantorium" and the term "The Law Merchant" leads to some great explanations of fundamental ideas that shape our world.
Mostly its unlearning rather than learning. The fact is that the banks could not have simply taken governments over without leaving a remedy. Its un-ethical and civilizations sit on a foundation of ethics. The current underlying believe in eugenics and the promise of a just society is the driving force of the changes we see in todays world. To many these are not unethical.