The National Crime Victimization Survey (NCVS) and the Uniform Crime Report (UCR) are used to gather reports on crime rates in the United States. The law enforcement uses the (UCR) to report national crime statistics. The crimes are reported monthly and the (UCR) has two major categories Part I and Part II offenses. Violent and property crimes are categorized in Part I offenses that includes aggravated assault, forcible rape and robbery under violent crimes. Property crimes are arson, burglary, larceny, theft and motor vehicle theft. The (UCR) reports crimes under Part II offenses that includes curfew violations, liquor offenses, simple assault, prostitution and vandalism to name a few. UCR is not mandatory for every state law enforcements.
