[L]iberalism has been very severely threatened in recent years. It's been threatened from a number of sources. So internationally you have two great … - Francis Fukuyama

[T]he liberal world order that emerged, that... has these pragmatic and... moral dimensions has been severely challenged in the last few years, and the sources of this challenge are numerous. One is the rise of overtly authoritarian states like China and Russia. They have consolidated their rule. They seem to be stable internally, and they are increasingly seeking to project their power and influence, their model... across international borders.

Liberal values like tolerance and individual freedom are prized most intensely when they are denied: People who live in brutal dictatorships want the simple freedom to speak, associate, and worship as they choose. But over time life in a liberal society comes to be taken for granted and its sense of shared community seems thin.

If you look at the sociology of populism in the United States, it is tied most closely to population density, which... is correlated... to these types of cultural differences... to belief... in traditional cultural values, in family, in religion and the like, and conversely to... belief in immigration [and] diversity as strengths... [T]his is the fundamental division that's taken hold of the United States. It has been augmented by technology because the internet has succeeded in... destroying every other source of authority that used to filter news and facts and information that... formed the basis of a democratic ability to have political discourse.