[T]he election... on November 3 ... illustrates a lot of these clashing forces. ...[T]hat election was the most important political fight ...in my li… - Francis Fukuyama

There is a left wing version of this longing for community... because in a liberal society we never move as quickly as we should towards full equality, and therefore there are many marginalized groups who feel that the liberal society is... hypocritical, that it's promising an equality of recognition, and of rights, but it is not delivering... and therefore the very concept of liberal universalism is challenged in favor of a definition of rights that is tied to the specific groups.

The other big issue is an emotional one. We tend to feel the greatest bonds of solidarity with people that are close to us. There are very few true citizens of the world. We're citizens of individual countries and we really feel the closest bonds to people that live within our nation, and therefore... the nation becomes a kind of social glue. But if you're going to make a national identity compatible with liberalism, it has to be the right kind of national identity. It has to be one that is open to all of the citizens that actually live in the territory of the nation. It can't exclude certain groups by race, by ethnicity, by religious belief and the like, and therefore it needs to be an open identity that is based on essentially liberal ideas.

The polarization has a number of different roots. The economic... fact that many working class voters have been left behind by the prosperity of globalization. ...[T]he more important division is a cultural one ...the feeling on the part of many populist voters, that they are not being respected by the elites that are running the country... [H]ere, all of the identity issues... play themselves out.