Wikipedia
An agit-train (Russian: агитпоезд) was a locomotive engine with special auxiliary cars outfitted for propaganda purposes by the Bolshevik government of Soviet Russia during the time of the Russian Civil War, War Communism, and the New Economic Policy. Brightly painted and carrying onboard a printing press, government complaint office, printed political leaflets and pamphlets, library books, and a mobile movie theater, agit-trains traveled the rails of Russia, Siberia, and the Ukraine in an attempt to inculcate the values and program of the new revolutionary government to a scattered and isolated peasantry.
Launched in August 1918, agit-trains — and their close counterparts, the urban agit-streetcar (Russian: агиттрамвай) and the aquatic agit-boat (Russian: агитпарaход) — continued in limited use throughout the 1920s. The agit-train concept was revived during the years of World War II as a mechanism for the direct spread of information during a time when ordinary means of communication and government control structures between the center and the periphery had faltered.