At New York Times, Timothy Egan notes that Americans are retreating to tribalism, and this is not a good thing. Here is an excerpt from Egan's article, "The National Crackup."

The American experiment [is the] the audacious idea that people from all races, ideologies and religious sects would check their hatreds at the door after becoming citizens is our sustaining narrative. Within our borders, Protestants don’t fight Catholics, Sunnis don’t go after Shiites, Armenians share neighborhoods with Turks, and a family that can trace much of its ancestry to slavery occupied a White House built in part by slaves. But that tenuous construct is breaking apart. We are retreating to our tribal, ethnic and primitively prejudicial quarters. Everything is about race and identity. We come from privilege, or oppression. We choose politicians based on whether they help our tribe or hurt People Like Us. Stupidly, the left is playing its part in this crackup, perhaps ensuring that Trump will stay in office. When people shout, “Check your privilege” at a speaker at a public event, what they’re saying is, “Shut up, your opinion doesn’t matter because of the color of your skin.”