Supplementary Homicide Data—The UCR Program’s supplementary homicide data provide information regarding the age, sex and race of the murder victim and the offender; the type of weapon used; the relationship of the victim to the offender; and the circumstance surrounding the incident. Law enforcement agencies are asked—but not required—to provide complete supplementary homicide data for each murder they report to the UCR Program. Information gleaned from these supplementary homicide data can be viewed in the Expanded Homicide Data section.
Justifiable homicide—Certain willful killings must be reported as justifiable or excusable. In the UCR Program, justifiable homicide is defined as and limited to:
The killing of a felon by a peace officer in the line of duty.
The killing of a felon, during the commission of a felony, by a private citizen.
Because these killings are determined through law enforcement investigation to be justifiable, they are tabulated separately from murder and nonnegligent manslaughter.
More information about justifiable homicide is furnished in the Expanded Homicide Data section and in Expanded Homicide Data Table 14
, “Justifiable Homicide by Weapon, Law Enforcement, 2009–2013,” and Expanded Homicide Data Table 15
, “Justifiable Homicide by Weapon, Private Citizen, 2009–2013.”