He went into exile during the White Terror that preceded the establishment of a right-wing government under the regency of Admiral Miklós Horthy.
[1] After meeting Sigmund Freud and Sándor Ferenczi in Vienna, he settled in Paris in 1921.
Meanwhile, he occupied the post of professor of philosophy at Lycée Marcelin Berthelot in Saint-Maur-des-Fossés.
Mobilized to Paris in 1940, he remained on the side of the French Communist Party's secret command.
After his comrade and friend Paul Langevin, a physicist of world renown, was arrested in October 1940, Politzer published the first edition of The Free University (L'Université Libre), which told of the imprisonment of scholars and denounced the extortions committed by invading fascists during World War II.