A 2015 report by Amnesty International studying police use of deadly force in the United States: The federal government and nine states rely entirely on the Gamer decision and departmental policies for the use of deadly force.
O No states allow private citizens to use deadly force if they are carrying out law enforcement activities, such as assisting an officer in making an arrest
o Only thirteen states have laws that thoroughly comply with the standards set by U. S. constitutional law on police use of deadly force.
O Some states require that deadly force be used only as a last resort with nonviolent and less harmful means to be tried first