The Aurora Police Department voluntarily participates in the Uniform Crime Reporting System (UCR). There are seven major crimes reported in UCR. These are the only crimes reported nationally to the FBI and the only measures to compare one city’s crime trends to another. For reporting purposes, the seven major crimes are categorized into two groups: Violent Crime (murder, forcible sex assault [rape], aggravated assault, robbery) and Property Crime (burglary, larceny, motor vehicle theft). The Total Major Crime or Index Crime is an aggregate of the total Violent Crime and total Property Crime, providing an overall view of major crime in an area.