The untold story of why America is so culturally and politically dividedAmerica may be more diverse than ever coast to coast, but the places where we live are becoming increasingly crowded with people who live, think, and vote as we do. This social transformation didn't happed by accident. We've built a country where we can all choose the neighborhood -- and religion and news show -- most compatible with our lifestyle and beliefs. And we are living with the consequences of this way-of-life segregation.