Ow does media influence fear within a society?

How does media influence fear within a society? Talk about how the stuff we read, watch, listen to can cause people to become scared. For instance in the modern world there are more and more shows based on crime, books about robberies, and horror moves, how do these cause people to become fearful. This is a research paper. i.e. Television shows about crime, books, news reports, essentially any form of media. Please include scholarly sources for the majority of source work. Also please include a work cited page.