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1 Ames C. Grawert, et al., Crime and Murder in 2018: A Preliminary Analysis 1 (2018)

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Crime and Murder in 2018:



A Preliminary Analysis


by  Ames C. Grawert, Adureh Onyekwere, and Cameron Kimble


This report analyzes available crime data from police departments
in the 30 largest U.S. cities.* It finds that across the cities where
data is available, the overall murder and crime rates are projected
to decline in 2018, continuing similar decreases from the previ-
ous year. This report is based on preliminary data and is intended
to provide an early snapshot of crime in 2018 in the 30 largest
cities. This data will be updated in later reports.

Declines in homicide rates appear especially pronounced in cities
that saw the most significant spikes during 2015 and 2016.
These findings directly undercut claims that American cities are
experiencing a crime wave. Instead, they suggest that increases in
the murder rate in 2015 and 2016 were temporary, rather than
signaling a reversal in the long-term downward trend.

This report's main findings are explained below and detailed in
Figure 1, and Tables 1 and 2:

*  Murder  The 2018  murder rate in these cities is projected to
   be 7.6 percent lower than last year. This estimate is based on
   data from 29 of the nation's 30 largest cities. This murder rate
   is expected to be approximately equal to 2015's rate, near the
   bottom of the historic post-1990 decline.' Especially sharp de-

*  This report collected data on six Part I index crimes tracked by the FBI in the
   Uniform Crime Reports: murder robbery, and aggravated assault (collectively
   violent crime'), and burglary, larceny, and motor vehicle theft (collectively,
   property crime). Overall crime includes all six offenses.
   Year-end 2018 estimates are based on year-to-date crime data projected
   over the full year to simulate past years' month-to-month variation for each
   city. As noted in Tables 1 and 2, the authors were unable to secure data
   from some cities. As the FBI's Uniform Crime Report for 2017 has not been
   released yet, our 2018 estimates are compared to the Brennan Center's final
   2017 estimates. An updated version of this report will be released after the
   release of the Uniform Crime Report for 2017. Notably the Centers 2015,
   2016, and 2017 preliminary estimates accurately predicted whether crime
   and murder were increasing or decreasing based on the same methodology.


   clines appear in San Francisco (-35.0 percent), Chicago (-23.2
   percent), and Baltimore (-20.9 percent). These estimates are
   based on preliminary data, but if they hold, the number of
   murders in Chicago could fall by year's end to the lowest since
   2015. In Baltimore, homicides could drop to the lowest since
   2014. While the city's murder rate remains high, this would
   mark a significant reversal of the past two years' increases.

*  While the overall murder rate is estimated to decline this year
   in these cities, a few cities are projected to experience increases.
   For example, Washington, D.C.'s murder rate is expected to
   rise 34.9 percent. Several cities with relatively low murder rates
   are also seeing increases, such as Austin (rising by roughly 30
   percent). Since the city has relatively few murders, any increase
   may appear large in percentage terms.

*  Overall Crime: At the time of publication, full crime data -
   covering all Part I index crimes tracked by the FBI - were
   only available from 19 of the 30 largest cities. (Past Brennan
   Center reports included, on average, 21 cities.) In these cities,
   the overall crime rate for 2018 is projected to decrease by 2.9
   percent, essentially holding stable. If this estimate holds, this
   group of cities will experience the lowest crime rate this year
   since at least 1990. These findings will be updated with new
   data when available.

This report does not present violent crime data because the au-
thors could not collect sufficient data by the time of publication.

While the estimates in this report are based on early data,
previous Brennan Center reports have correctly estimated the
direction and magnitude of changes in major-city crime rates.2
The  Brennan Center's final report analyzing crime data in 2017
is available here.


CRIME  AND  MURDER IN 2018 I 1

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