RUTHFULLY YOURS

What then is the disease? We are now close to the end of a half-century process by which the campuses have been emptied of centrist and right-of-center voices. Many scholars have studied the political allegiances of the faculty during this time. There have been some differences of opinion about methodology, but the main outline is not in doubt. In 1969 the Carnegie Commission on Higher Education found that there were overall about twice as many left-of-center as right-of-center faculty. Various studies document the rise of that ratio to 5 to 1 at the century’s end, and to 8 to 1 a decade later, until in 2016 Mitchell Langbert, Dan Klein, and Tony Quain find it in the region of 10 to 1 and still rising.

Even these figures understate the matter. The overall campus figures include professional schools and science, technology, business and mathematics departments. In most humanities and social-science departments—especially those central to a liberal education, such as history, English and political science—the share of left-of-center faculty already approaches 100%.

The imbalance is not only a question of numbers. Well-balanced opposing views act as a corrective for each other: The weaker arguments of one side are pounced on and picked off by the other. Both remain consequently healthier and more intellectually viable. But intellectual dominance promotes stupidity. As one side becomes numerically stronger, its discipline weakens. The greater the imbalance between the two sides, the more incoherent and irrational the majority will become.

What we are now seeing on the campuses illustrates this general principle perfectly. The nearly complete exclusion of one side has led to complete irrationality on the other. With almost no intellectual opponents remaining, campus radicals have lost the ability to engage with arguments and resort instead to the lazy alternative of name-calling: Opponents are all “fascists,” “racists” or “white supremacists.”

In a state of balance between the two sides, leadership flows naturally to those better able to make the case for their side against the other. That takes knowledge and skill. But when one side has the field to itself, leadership flows instead to those who make the most uncompromising and therefore intellectually least defensible case, one that rouses followers to enthusiasm but can’t stand up to scrutiny. Extremism and demagoguery win out. Physical violence is the endpoint of this intellectual decay—the stage at which academic thought and indeed higher education have ceased to exist.

That is the condition that remains after Mr. Shapiro and the legions of police have left campus: More than half of the spectrum of political and social ideas has been banished from the classrooms, and what remains has degenerated as a result. The treatment of visiting speakers calls attention to that condition but is not itself the problem. No matter how much money is spent on security, no matter how many statements supporting free speech are released, the underlying disease continues to metastasize.

During the long period in which the campus radical left was cleansing the campuses of opposition, it insisted that wasn’t what it was doing. Those denials have suddenly been reversed. The exclusion of any last trace of contrary opinion is not only acknowledged but affirmed. Students and faculty even demand “safe spaces” where there is no danger that they will be exposed to any contrary beliefs. CONTINUE AT SITE