Berns taught at Cornell from 1959 to 1969 and chaired the Department of Government from 1963 to 1967. Berns became friends with his faculty colleague
Allan Bloom during these years. He was less than impressed by the attitudes of the faculty class at the time: I recall a faculty party at Cornell, the day after the annual Fourth of July celebration at the university football stadium with fireworks. The wife of an economics professor, when asked if she had enjoyed the fireworks, replied, "Yes, but I could have done without all the flag-waving." This reminded me of that familiar old song—familiar in some circles, at least—"If you don't like my peaches, why do you shake my tree?" Berns was an active participant in the debates leading up to the
takeover of the Cornell student union by
black separatist activists in 1969. Berns and Bloom were among a small cohort of professors who argued for the primacy of the
liberal arts and for "
academic freedom" to disagree with the changes and "new orthodoxy" spearheaded by University President
James A. Perkins, such as the erosion of the
core curriculum and the concessions to demands for a black-only college. Berns was targeted by protesters for his role in the campus debate; in his radio broadcast after taking over the
student union on April 19, 1969,
Thomas W. Jones included Berns in a list of those opposing the protesters: "Walter Berns is a racist." Once the student union takeover had been settled in favor of the protesters and after he had receiving personal threats, Berns resigned from Cornell and took up a position at the
University of Toronto. == In Washington ==