In 1923 Kolman was assigned to the party apparatus in Moscow, where he quickly assumed the role of ideological watchdog in scientific community.
[2] In 1930 Dmitri Egorov, the president of Moscow Mathematical Society was arrested by Soviet secret police.
In July–August 1936, Nikolai Luzin was criticised in Pravda in a series of anonymous articles, whose authorship later was attributed to Kolman.
[4] Luzin was accused of publishing his works in foreign scientific journals and denounced for being close to the “slightly modernized ideology of the black hundreds, orthodoxy, and monarchy.” After World War II Kolman was sent to Czechoslovakia, where he worked as a head of the propaganda department of the Communist Party of Czechoslovakia Central Committee.
Pavel Kovaly, "Arnoŝt Kolman: Portrait of a Marxist-Leninist philosopher," Studies in East European Thought 12 (1972): 337–366.