Even some on the right have become disenchanted with the American project and are prepared to quit on it on grounds that it is already lost or hopelessly corrupted.

There is no doubt that the country faces severe challenges, many the result of shortsightedness and wishful thinking, but we still have an enormous capacity for renewal. It is because our ancestor patriots rejected despair and kept faith with America that we are here to fight another day.

The ultimate answer to the illiberalism ascendant on college campuses and elsewhere and to the rampaging anti-Americanism of our elite culture will have to be found in the common sense and decency of the American people. The rule of law, federalism, and the protections of the U.S. Constitution continue to be bulwarks against the most ambitious designs of ideological fanatics. Families, churches and synagogues, neighborhoods, and voluntary associations — all under pressure — remain the foundations of society, more relevant to the lives of individuals and communities than social media or edicts from Washington.

In protecting and revitalizing America, there is no substitute for the hard work of public persuasion.