and the social contract dictated that the state send out reasonably clear signals and the population react accordingly. Signals were sent through propaganda in newspapers, movies, and books; through legal changes; and through enforcement, with demonstrative punishment of the few keeping the many in line (the proportion of those being punished to those observing shifted after the death of Stalin, and this solidified the principle of teaching by frightening example). It was this system of signaling and response that broke down by 1991.