the role of a police officer in society

look for a article that talks about some type of police activity and create  PowerPoint and base on the history describe 

-What is the role of a police officer in society? (general statement )

-how are they viewed by society?

what is the role of the police in this case?

how it is seems by society? 

                  Article 

 An unbelievable History of  Rape   

An 18-year-old said she was attacked at knifepoint. Then she said she made it up. Thats where our story begins.

by T. Christian Miller, ProPublica and Ken Armstrong, The Marshall Project December 16, 2015 

https://www.propublica.org/article/false-rape-accusations-an-unbelievable-story