A post which came to my attention in July 2013 serves as a foundation statement for a major portion of my blog. The three concerns which inform my blog are social injustice and the threats to human life posed both by a nuclear war conflagration and the destabilization of our Earth's climate. All three concerns are rooted in the capitalist system. This treatise entitled Capitalism and the Destruction of Life on Earth by Richard Smith, an economist, published in Real-World Economics Review journal (No.64) justifies my concerns about climate destabilization (and environmental destruction) caused by the system of capitalism.
Then, if you accept that view of human nature, it follows that we need the supervision of our bosses, and those bosses need bosses, and so on until one reaches the One Percent of Americans who quite literally own and rule the US. And, of course, this view provides a convincing justification for them to have so much wealth and power, while the rest of us have so little or up to our necks in debt owed to them.
As a sop to any oddballs who might complain about this arrangement, the ruling capitalist class provides all the paraphernalia of a fake "democracy"--corporate sponsored candidates in managed elections, a Constitution (which they ignore or interpret to serve their needs), courts for which they appoint the justices, the corporate megaphones of disinformation (often referred to as mainstream media), etc.
For an excellent exposition on human nature I refer you to Chapter 5 from Power and Powerlessness by Susan Rosenthal, a retired Canadian psychiatrist. She has made her book available for downloading at this site.
Another excellent source is Noam Chomsky's view of human nature as he elucidated in a debate with the French philosopher, Michel Foucault, in 1971. (A briefer description can be obtained in video excerpts from this debate that you can access here and here.)