Harold Lasswell explaining the difference between propaganda and education in 1935:

The spread of controversial attitudes is propaganda; the spread of acceptable attitudes is skills education. It is proper to speak of Communism as propaganda in Chicago and as education in Moscow.*

Today, of course, we could define propaganda and education in exactly the same way but the examples would be reversed.

*Harold D. Lasswell. 1935. “The Person, Subject and Object of Propaganda.” Annals of the American Academy of Political Science, vol 179: 189. Quoted in Wolfgang Schivelbusch. 2006. Three New Deals. New York: Picador, 74.