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Based on these estimates, geospatial maps were prepared to visually display the reporting jurisdictions.
The data used to calculate street gangs and outlaw motorcycle gang estimates nationwide in the report are derived primarily from NDIC’s National Drug Threat Survey.
This information provided by our law enforcement partners was used to identify many of the trends and issues included in this report.
Reporting used to quantify the number of street and outlaw motorcycle gangs and gang members was primarily derived from the 2010 NDIC NDTS data and some supplemental NGIC reporting from our law enforcement partners.
In the 2010 NDTS, the key assumption was that individual respondents provided estimates on gang members for their jurisdictions only and did not include other jurisdictions.
However, NGIC acknowledges that there may be some duplication or underreporting of gang members because of variations in each jurisdiction’s process to estimate gang activity.
The NGIC is comprised of representatives from the Federal Bureau of Investigation (FBI), US Drug Enforcement Administration (DEA), US Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF), US Bureau of Prisons (BOP), United States Marshals Service (USMS), US Immigration and Customs Enforcement (ICE), US Department of Defense (DOD), National Drug Intelligence Center (NDIC), and US Customs and Border Protection (CBP).
In 2009, the NGIC released its second threat assessment on gang activity in the United States.
The NGIC and its law enforcement partners documented increases in gang proliferation and migration nationwide and emerging threats. Reporting and intelligence collected over the past two years have demonstrated increases in the number of gangs and gang members as law enforcement authorities nationwide continue to identify gang members and share information regarding these groups.
The FBI and NGIC recommend contacting state and local law enforcement agencies for more information related to specific gang activity.
The National Gang Intelligence Center (NGIC) prepared the 2011 National Gang Threat Assessment (NGTA) to examine emerging gang trends and threats posed by criminal gangs to communities throughout the United States.