The+Versatility+of+Propaganda

The pigs in this example succeed in turning an invention of Snowball's, the slogan of, "Four legs good, two legs bad," once a method of simplifying the Seven Commandments to an easily memorable phrase to strengthen the resolve of the sheep, into a means of defending their platform. As long as they claim that the Animals' lack of cooperation with Napoleon will lead to the return of Jones, an easily identifiable enemy, and the sheep bleat out the phrase, their platform is unassailable, as anyone who would do away with it implicitly desires the return of Jones.