The self-interest of people in government leads them to behave in a way that is against the self-interest of the rest of us. You remember Adam Smith's famous law of the invisible hand: People who intend only to seek their own benefit are "led by an invisible hand to serve a public interest which was no part of" their intention. I say that there is a reverse invisible hand: People who intend to serve only the public interest are led by an invisible hand to serve private interests which was no part of their intention.