The propaganda model is a conceptual model in political economy advanced by Edward S. Herman and Noam Chomsky to explain how propaganda and systemic biases function in corporate mass media. The model seeks to explain how populations are manipulated and how consent for economic, social, and political policies, both foreign and domestic, is "manufactured" in the public mind due to this propaganda. The theory posits that the way in which corporate media is structured (e.g. through advertising, concentration of media ownership or government sourcing) creates an inherent conflict of interest and therefore acts as propaganda for anti-democratic elements.