Editing Uniform Crime Reports (section)

=== Formation by the IACP & SSRC and Initial Reports (1927-1930) ===
The UCR Program was based upon work by the [[International Association of Chiefs of Police]] (IACP) and the [[Social Science Research Council]] (SSRC)<ref>Lawrence Rosen, "The Creation of the Uniform Crime Report", ''Social Science History'' 19:2 (Summer 1995):215–238.</ref> throughout the 1920s to create a uniform national set of crime statistics, reliable for analysis. In 1927, the IACP created the Committee on Uniform Crime Reporting to determine statistics for national comparisons. The committee concluded that eight index crimes were fundamental to comparing crime rates across geographic locations: [[Murder|murder and non-negligent manslaughter]], [[Negligent homicide|negligent manslaughter]], [[Rape|forcible rape]], [[robbery]], [[Assault#Aggravated assault|aggravated assault]], [[burglary]], [[Larceny|larceny-theft]], and [[motor vehicle theft]]. (From 1930 to 1957, negligent manslaughter was included as an index crime.<ref name=":0">{{Cite web |last1=United States Department of Justice |last2=Federal Bureau of Investigation |date=2003-06-19 |title=Uniform Crime Reports [United States], 1930-1959 |url=https://www.icpsr.umich.edu/web/NACJD/studies/3666/versions/V1 |archive-url= |website=Inter-university Consortium for Political and Social Research}}</ref> In 1979, [[arson]] would be added as an index crime by a congressional directive.) 

The early program was managed by the IACP and published through a monthly report.<ref name=":0" /> The first report in January 1930 reported data from 400 cities throughout 43 states, covering more than 20 million individuals, approximately twenty percent of the total U.S. population at the time.<ref name=":1">[https://www.fbi.gov/ucr/cius_00/contents.pdf Crime in the United States 2000]. (PDF). Federal Bureau of Investigation, U.S. Department of Justice. Washington, D.C.. Retrieved on 30 March 2008. [https://web.archive.org/web/20100414194515/http://www.fbi.gov/ucr/cius_00/contents.pdf Archived] on 14 April 2010.</ref>