The document discusses how horror films have reflected the fears of society over time. It provides examples of how early 20th century horror films represented fears of war, monsters, and segregation. In the 1950s, films reflected a fear of nuclear weapons. The 1970s saw an increase in serial killer-focused films like Halloween that tapped into real crimes. More modern films like Get Out explicitly address contemporary social issues like racism to try and influence viewers. Overall, the document argues that horror films both draw from and impact societal fears and attitudes.