Public Opinion By Walter Lippmann Public Opinion is a book by Walter Lippmann, published in 1922, that is a critical assessment of functional democratic government, especially the irrational, and often self-serving, social perceptions that influence individual behavior, and prevent optimal societal cohesion. The descriptions of the cognitive limitations people face in comprehending their socio-political and cultural environments, proposes that people must inevitably apply an evolving catalogue of general stereotypes to a complex reality, rendered Public Opinion a seminal text in the fields of media studies, political science, and social psychology.