Rational self interest
Since the concept is SO fundamental to economics, psychology, sociology and governance, you'd think we all knew what it is. It's the flaw in practical economics -- observe the credit crunch, SUVs, McMansions, ecotravel.
Because we are brainwashed by psychologists who know perfectly well how to coerce us into acting against our survival, accumulation of energy, ability to give our kids a solid foundation, we act against both our individual and our collective self interest.
Shall we hang all the psychologists who flog consumer goods and warp election minds, AND those who hire them?
Shall we enforce a Hippocratic Oath for psychologists?
How will we rid ourselves of people who learn about our minds and then hire out to damage us, to train us to act against the human race, our nation, our tribe, our family, our selves?
When the last Republican is strangled with the entrails of the last psychologist?