Steven Levitsky and Daniel Ziblatt write: Donald J. Trump’s election has raised a question that few Americans ever imagined asking: Is our democracy in danger? With the possible exception of the Civil War, American democracy has never collapsed; indeed, no democracy as rich or as established as America’s ever has. Yet past stability is no guarantee of democracy’s future survival.

We have spent two decades studying the emergence and breakdown of democracy in Europe and Latin America. Our research points to several warning signs.

The clearest warning sign is the ascent of anti-democratic politicians into mainstream politics. Drawing on a close study of democracy’s demise in 1930s Europe, the eminent political scientist Juan J. Linz designed a “litmus test” to identify anti-democratic politicians. His indicators include a failure to reject violence unambiguously, a readiness to curtail rivals’ civil liberties, and the denial of the legitimacy of elected governments.

Mr. Trump tests positive. In the campaign, he encouraged violence among supporters; pledged to prosecute Hillary Clinton; threatened legal action against unfriendly media; and suggested that he might not accept the election results.

This anti-democratic behavior has continued since the election. With the false claim that he lost the popular vote because of “millions of people who voted illegally,” Mr. Trump openly challenged the legitimacy of the electoral process. At the same time, he has been remarkably dismissive of United States intelligence agencies’ reports of Russian hacking to tilt the election in his favor. [Continue reading…]