Discuss the role of the police and excessive force in the United States. What documents/ decisions govern the use of force in policing?

Discuss the role of the police and excessive force in the United States. What documents/ decisions govern the use of force in policing? How do the three sociological perspectives of policing inform the views on police use of force? What have been barriers in deterring the use of excessive force by the police? Based on your gained knowledge throughout the course, what are reasonable ways forward to deal with excessive force? Are those reasonable ways likely, why or why not?