The UCR divides offenses into two groups, Part I and Part II crimes. The UCR program collects data about Part 1 offenses in order to measure the level and scope of crime occurring throughout the nation. The program’s founders chose these offenses because they are serious crimes, they occur with regularity in all areas of the country, and they are likely to be reported
to police. Part 1 or Part A offenses are: Criminal homicide – a.) Murder and non-negligent manslaughter: the willful (non-negligent) killing of one human being by another. Deaths caused by negligence, attempts to kill, and assaults to kill, suicides, and accidental deaths are excluded. The program classifies justifiable homicides separately and limits the definition to: (1) the killing of a felon by a law enforcement officer in the line of duty; or (2) the killing of a felon, during the commission of a felony, by a private citizen. b.) Manslaughter by negligence: the killing of another person through gross negligence. Deaths of persons due to their own negligence, accidental deaths not resulting from gross negligence. And traffic fatalities are not included in the category Manslaughter by Negligence. Forcible rape, Robbery, Aggravated Assault, Burglary (breaking or entering), Larceny, Motor vehicle theft and Arson.
The major sources of crime data today consist of four annual publications, Crime in the United States, National Incident-Based Reporting System, Law Enforcement Officers Killed and Assaulted, and Hate Crime Statistics that are produced from data received from over 18,000 city, university/college, county, state, tribal, and federal law enforcement agencies voluntarily participating in the program. Additional reports that’s available on the Law Enforcement Officers Killed and Assaulted (LEOKA) Program and the Hate Crime Statistic Program, along with traditional Summary Reporting System (SRS) and the National Incident-Based System (NIBRS). The FBI redesigned and redeveloped the system to support the FBI’s UCR Program for more than 30 years.