The data analyzed in this report are available [here][1], hosted by the Johns Hopkins University Data Archive. The raw data on crime incidents and arrests, compiled and released to the public by the Baltimore Police Department, are also available on the data portal of the city, [Open Baltimore][2].
Additional detail on the report, including links to media coverage, can be found on the [reports page][3] of [Morgan's personal website][4].
[1]: http://dx.doi.org/10.7281/T1J10120
[2]: http://data.baltimorecity.gov
[3]: http://socweb.soc.jhu.edu/faculty/morgan/reports.html
[4]: http://socweb.soc.jhu.edu/faculty/morgan/