From the Hungarian Wikipedia page [1]
István Marcus (Budapest September 9, 1920- Budapest October 21, 1997) Hungarian sociologist, critic, editor.
From 1945 he was the editor of 'Szabad Szó' (Free Word) and 'Valóság' (Reality). In 1948 he became assistant professor at the University of Economics (Közgazdasági Egyetemre), where he taught for three years. He was imprisoned in 1951-52, and was not given a job after his release in 1953. Due to his involvement in the 1956 Revolution he was sent to prison again between 1957 and 1961, originally sentenced to 10 years in prison, and was released under the amnesty. After the fall of the revolution István Márkus was already in pretrial detention when he had to testify on behalf of the Hungarian Writers' Association about the role played by the main accused Imre Nagy and his colleagues in the 1956 revolution and freedom struggle.
After his release, he wrote an article about Imre Sarkadi in the 1962 year of the literary journal Kortárs. This article launched a great debate among literary writers, many of whom took part in the dispute, including Ernő Gondos, László B. Nagy, Tibor Cseres (Contemporary, 1962 / No. 9). In the following years he mainly worked as a writer of youth and sociography, and examined Hungarian reality from an economic, political and social psychological point of view. In 1983 he became a candidate for sociological sciences.
After the regime change he joined the public interest debates, such as "The replica circuit issues a bourgeois concept of" co-authors: Bácskai Vera, Gyula Benda, Gabriella Gáspár, Gábor Gyáni, Laszlo Kosa, Tibor Kuczi, Agnes Losonczi, Peter Niedermüller, Arpad Szakolczai, Tőkéczki László.