How can propaganda be used in a positive way?

Propaganda as a concept has neither positive nor negative connotations and can be used in a positive way if it is done to promote positive change. As disseminated by mass media, it can be used by governments and other groups to promote positive messages and lifestyles.

Public service campaigns have successfully reduced smoking rates and resulted in other positive lifestyle changes such as healthier eating habits and anti-drunk driving campaigns. Since propaganda campaigns aim to change public opinion in a long lasting way over time, they have often been used by political factions as well as during wartime to sway public opinion.