for example, he wrote that "Perennial suffering has as much right to expression as a tortured man has to scream"; while in "Commitment," he wrote in 1962 that the dictum "expresses in negative form the impulse which inspires committed literature"—was part of post-war Germany's struggle with history and culture. Adorno additionally befriended the writer and poet Hans Magnus Enzensberger as well as the film-maker Alexander Kluge. In 1963, Adorno was elected to the post of chairman of the German Sociological Society, where he presided over two important conferences: in 1964, on "Max Weber and Sociology" and in 1968 on "Late Capitalism or Industrial Society". A debate launched in 1961 by Adorno and Karl Popper, later published as the Positivist Dispute in German Sociology, arose out of disagreements at the 1959 14th German Sociology Conference in Berlin. Adorno's critique of the dominant climate of post-war Germany was also directed against the pathos that had grown up around Heideggerianism, as practiced by writers like Karl Jaspers and Otto Friedrich Bollnow, and which had subsequently seeped into public discourse. His 1964 publication of The Jargon of Authenticity took aim at the halo such writers had attached to words like "angst", "decision" and "leap". After seven years of work, Adorno completed Negative Dialectics in 1966, after which, during the summer semester of 1967 and the winter semester of 1967–68, he offered regular philosophy seminars to discuss the book chapter by chapter. Among the students at these seminars were the Americans Angela Davis and Irving Wohlfarth. One objection, which would soon take on ever greater importance, was that critical thought must adopt the standpoint of the oppressed, to which Adorno replied that negative dialectics was concerned "with the dissolution of standpoint thinking itself." Confrontations with students At the time of Negative Dialectics publication, student protests fragilized West German democracy. Trends in the media, an educational crisis in the universities, the Shah of Iran's 1967 state visit, German support for the war in Vietnam and the emergency laws combined to create a highly unstable situation. Like many of his students, Adorno too opposed the emergency laws, as well as the war in Vietnam, which, he said, proved the continued existence of the "world of torture that had begun in Auschwitz". The situation only deteriorated with the police shooting of Benno Ohnesorg at a protest against the Shah's visit. This death, as well as the subsequent acquittal