Agit-prop, a contraction of the words "agitatsiia" and "propaganda" was an omni-present activity in the post-Revolutionary Soviet Union. Intended to inculcate and promote appropriate social class values among the masses, its many forms (palaces of culture, use of agitation trains and cars, poster campaigns, and the countless agitation centres, or 'agitpunkts', among others) served as a powerful means of politically educating the population at large. Books and libraries played an important role in the agit-prop entreprise...
Source: http://digital.library.mcgill.ca/russian/agit.htm