Propaganda incorporates the literature from social science and psychological manipulation into an examination of the techniques of public communication. Bernays wrote the book in response to the success of some of his earlier works such as Crystallizing Public Opinion (1923) and A Public Relations Counsel (1927). Propaganda explored the psychology behind manipulating masses and the ability to use symbolic action and propaganda to influence politics, effect social change, and lobby for gender and racial equality. This work propelled Bernays into media historians'' view of him as the "father of public relations."