A democracy cannot function without good losers. Human beings are not naturally inclined to surrender power to our ideological and cultural adversaries; a society must train and educate its citizens — civilize them, if you will — to tolerate political defeat, seek compromise, and work patiently to regain power by winning the next election. This, Fareed Zakaria argues in The Washington Post, is the fundamental problem with transplanting democracy in the Middle East: There are precious few moderates, and they inevitably lose out to more ruthless extremists.

It's not just the Iraqis, Syrians, Egyptians, or Palestinians who have "a moderate" problem. The U.S. now has one, too. A recent Pew Research survey found that Americans are deliberately sorting themselves into red and blue tribes; we seek to live, work, and socialize with people who share our worldviews and shun those who do not. One out of four Democrats and one out of three Republicans sees the other party "as a threat to the nation's well-being." It is these people, with the most vehement views, who shape our politics: Why compromise with evil? As a result, Washington is dysfunctional, and Congress can no longer reach consensus, make decisions, or even agree how to pay to rebuild aging roads and bridges. In our ideological and cultural silos, meanwhile, our distrust of and contempt for the other tribes deepens. Ferguson, Missouri, provides a particularly ugly reminder of our civic breakdown. When police in armored vehicles point military weapons at crowds of furious protesters — some throwing Molotov cocktails and tweeting "I am ready to die tonight" — you have to wonder where we are headed.