The term originated in the Soviet Union where it referred to popular media, such as literature, plays, pamphlets, films, and other art forms, with an explicitly political message in favor of communism.
After the October Revolution of 1917, an agitprop train toured the country, with artists and actors performing simple plays and broadcasting propaganda.
[8] It had a printing press on board the train to allow posters to be reproduced and thrown out of the windows as it passed through villages.
[9] The first head of the Propaganda and Agitation Department of the Central Committee of the Communist Party (b) was Evgeny Preobrazhensky.
[11] Russian agitprop theater was noted for its cardboard characters of perfect virtue and complete evil, and its coarse ridicule.