What is a book that explains people's unethical behavior?
I just read a book called Careless People, which does a good job of explaining numerous unethical actions by Facebook's senior leadership, as told by someone who worked there. On the last page, the author said something that really struck me: "They [Facebook senior leadership] just didn't lose any sleep over it." While this was a great book, I wish the author had considered why, beyond the few sentences scattered throughout the book about their greed, newfound power, and isolation from the rest of the world.
Essentially, the book made me ask: Why do so many people not care about their unethical behavior? I want to know what these types of people's internal logic is, because it is hard for me to think that most people who are what we would consider evil know they are the bad guy, and wholeheartedly embrace the label.
Examples of books that could help answer this question: fiction books that expound on the villain's perspective, psychology books that examine why people act unethically, philosophy books about human behavior, etc.
Thanks!