This data represents all ShotSpotter incidents that were classified as “Probable Gunfire”, “Single_Gunshot”, or “Multiple_Gunshots” occurring within one of the six coverage areas defined below since January 1, 2014. The Department plans to continue to release this data with quarterly updates. Classifications are assigned by ShotSpotter and represent their assessment of what kind of impulse noise occurred. Some impulses initially dismissed as non-gunfire are manually audited and resubmitted to the dataset after ground truth analysis.MPD began implementing the ShotSpotter system in 2006 and has added sensors and upgraded components of the system at various times. ShotSpotter has also enhanced their ability to distinguish gunshots from other impulse noises. For example, the number of impulse noises coded as gunshots during Independence Day celebrations have significantly decreased over the past four years.ShotSpotter does not provide coverage for the entire District of Columbia. Official coverage areas are designed by ShotSpotter in conjunction with MPD, to target high population density areas with frequent sounds of gunshots incidents.A ShotSpotter incident may involve one gunshot or multiple gunshots depending on the time elapsed between each shot. Each incident is given a serial number ID when it occurs.The Latitude and Longitude of the incidents are rounded to three decimal places due to privacy concerns. This roughly corresponds to a 100 meter resolution.

Time enabled layer of shootings in DC, MD, and VA from 2014-2024

Emerging hot spot analysis for shootings in the DC, MD, and VA region from 2014-2024

THIS DATASET WAS LAST UPDATED AT 8:11 AM EASTERN ON OCT. 23

OVERVIEW

2019 had the most mass killings since at least the 1970s, according to the Associated Press/USA TODAY/Northeastern University Mass Killings Database.

In all, there were 45 mass killings, defined as when four or more people are killed excluding the perpetrator. Of those, 33 were mass shootings . This summer was especially violent, with three high-profile public mass shootings occurring in the span of just four weeks, leaving 38 killed and 66 injured.

A total of 229 people died in mass killings in 2019.

The AP's analysis found that more than 50% of the incidents were family annihilations, which is similar to prior years. Although they are far less common, the 9 public mass shootings during the year were the most deadly type of mass murder, resulting in 73 people's deaths, not including the assailants.

One-third of the offenders died at the scene of the killing or soon after, half from suicides.

About this Dataset

The Associated Press/USA TODAY/Northeastern University Mass Killings database tracks all U.S. homicides since 2006 involving four or more people killed (not including the offender) over a short period of time (24 hours) regardless of weapon, location, victim-offender relationship or motive. The database includes information on these and other characteristics concerning the incidents, offenders, and victims.

The AP/USA TODAY/Northeastern database represents the most complete tracking of mass murders by the above definition currently available. Other efforts, such as the Gun Violence Archive or Everytown for Gun Safety may include events that do not meet our criteria, but a review of these sites and others indicates that this database contains every event that matches the definition, including some not tracked by other organizations.

This data will be updated periodically and can be used as an ongoing resource to help cover these events.

Using this Dataset

To get basic counts of incidents of mass killings and mass shootings by year nationwide, use these queries:

Mass killings by year

Mass shootings by year

To get these counts just for your state:

Filter killings by state

Definition of "mass murder"

Mass murder is defined as the intentional killing of four or more victims by any means within a 24-hour period, excluding the deaths of unborn children and the offender(s). The standard of four or more dead was initially set by the FBI.

This definition does not exclude cases based on method (e.g., shootings only), type or motivation (e.g., public only), victim-offender relationship (e.g., strangers only), or number of locations (e.g., one). The time frame of 24 hours was chosen to eliminate conflation with spree killers, who kill multiple victims in quick succession in different locations or incidents, and to satisfy the traditional requirement of occurring in a “single incident.”

Offenders who commit mass murder during a spree (before or after committing additional homicides) are included in the database, and all victims within seven days of the mass murder are included in the victim count. Negligent homicides related to driving under the influence or accidental fires are excluded due to the lack of offender intent. Only incidents occurring within the 50 states and Washington D.C. are considered.

Methodology

Project researchers first identified potential incidents using the Federal Bureau of Investigation’s Supplementary Homicide Reports (SHR). Homicide incidents in the SHR were flagged as potential mass murder cases if four or more victims were reported on the same record, and the type of death was murder or non-negligent manslaughter.

Cases were subsequently verified utilizing media accounts, court documents, academic journal articles, books, and local law enforcement records obtained through Freedom of Information Act (FOIA) requests. Each data point was corroborated by multiple sources, which were compiled into a single document to assess the quality of information.

In case(s) of contradiction among sources, official law enforcement or court records were used, when available, followed by the most recent media or academic source.

Case information was subsequently compared with every other known mass murder database to ensure reliability and validity. Incidents listed in the SHR that could not be independently verified were excluded from the database.

Project researchers also conducted extensive searches for incidents not reported in the SHR during the time period, utilizing internet search engines, Lexis-Nexis, and Newspapers.com. Search terms include: [number] dead, [number] killed, [number] slain, [number] murdered, [number] homicide, mass murder, mass shooting, massacre, rampage, family killing, familicide, and arson murder. Offender, victim, and location names were also directly searched when available.

This project started at USA TODAY in 2012.

Contacts

Contact AP Data Editor Justin Myers with questions, suggestions or comments about this dataset at jmyers@ap.org. The Northeastern University researcher working with AP and USA TODAY is Professor James Alan Fox, who can be reached at j.fox@northeastern.edu or 617-416-4400.

This dataset shows the locations of the Fireworks displays in the Washington DC area for the 4th of July, 2008. there is another map if you follow the link.

This dataset displays the locations of all the public libraries in Washington D.C.. The data included is the name of the library, name of the library system, library's address, phone, and lat/lon coordinates. The data came from publiclibraries.com which is a updated directory of all the public libraries throughout the United States.

Shootings for Census tracts inside the I-495 beltway and I-695 beltway from 2014-2024.

This dataset shows the number of workers in 25 categories of occupation. The information is mapped according to place of work. The data is part of the Census Transportation Planning Package (CTPP), and is the result of a cooperative effort between various groups including the State Departments of Transportation, U.S. Census Bureau, and the Federal Highway Administration. The data is a special tabulation of responses from households completing the decennial census long form. The data was collected in 2000 and is shown at tract level. This data can be found at http://www.transtats.bts.gov/Fields.asp?Table_ID=1344.

This Dataset shows the location of the Bank of America branches and ATMs in the Washington DC area. I was able to geocode these locations based on street addresses provided by this website: http://www.insiderpages.com/s/DC/Washington/Banks_page277?sort=alpha&radius=50

This dataset shows the means of transportation to work reported by males. The information is mapped according to place of residence. The data is part of the Census Transportation Planning Package (CTPP), and is the result of a cooperative effort between various groups including the State Departments of Transportation, U.S. Census Bureau, and the Federal Highway Administration. The data is a special tabulation of responses from households completing the decennial census long form. The data was collected in 2000 and is shown at tract level. This data can be found at http://www.transtats.bts.gov/Fields.asp?Table_ID=1338.

This dataset shows the number of workers in 15 categories of industry. The information is mapped according to place of residence. The data is part of the Census Transportation Planning Package (CTPP), and is the result of a cooperative effort between various groups including the State Departments of Transportation, U.S. Census Bureau, and the Federal Highway Administration. The data is a special tabulation of responses from households completing the decennial census long form. The data was collected in 2000 and is shown at tract level. This data can be found at http://www.transtats.bts.gov/Fields.asp?Table_ID=1338.

This dataset shows the type of transportation people use to go to work. The information is mapped according to place of residence. The data is part of the Census Transportation Planning Package (CTPP), and is the result of a cooperative effort between various groups including the State Departments of Transportation, U.S. Census Bureau, and the Federal Highway Administration. The data is a special tabulation of responses from households completing the decennial census long form. The data was collected in 2000 and is shown at tract level. This data can be found at http://www.transtats.bts.gov/Fields.asp?Table_ID=1338.

This data set illustrates the Greyhound Bus Terminals in Washington, DC, Maryland, and Virginia. http://www.greyhound.com/scripts/en/TicketCenter/locations.asp?state=va http://www.greyhound.com/scripts/en/TicketCenter/locations.asp?state=dc http://www.greyhound.com/scripts/en/TicketCenter/locations.asp?state=md September 20, 2007

The point shapefile shows the results of spatial join between locations of Obama donors and Bush-Cheney donors in the NY City. You will find elsewhere on Finder! data showing the spatial join between Bush-Cheney and Obama donors. The number of records in each of these is limited by the number of records of the file with which the other one is joined. The donor locations shapefiles were geocoded from the Campaign finance reports filed by Obama and Bush-Cheney campaigns respectively. Only those reocrds with geocoding score of 90 plus and with the location attribute of "Street Address" and "Street Address point" are selected. Duplicate records are deleted in terms of first file with which the spatial join is using the second file. For eg., in this shape file, the number of duplicate records with respect to Obama donors are deleted. Also note that in this spatial join, only those records that has spatial distance of zero were included.

This dataset shows the classes of workers according to where they live. The data is part of the Census Transportation Planning Package (CTPP), and is the result of a cooperative effort between various groups including the State Departments of Transportation, U.S. Census Bureau, and the Federal Highway Administration. The data is a special tabulation of responses from households completing the decennial census long form. The data was collected in 2000 and is shown at tract level. This data can be found at http://www.transtats.bts.gov/Fields.asp?Table_ID=1338.

This dataset shows the time of departure for workers traveling from home to work. The information is mapped according to place of residence. The data is part of the Census Transportation Planning Package (CTPP), and is the result of a cooperative effort between various groups including the State Departments of Transportation, U.S. Census Bureau, and the Federal Highway Administration. The data is a special tabulation of responses from households completing the decennial census long form. The data was collected in 2000 and is shown at tract level. This data can be found at http://www.transtats.bts.gov/Fields.asp?Table_ID=1338.

This dataset shows the number of hours worked per week in 1999. The information is mapped according to place of residence. The data is part of the Census Transportation Planning Package (CTPP), and is the result of a cooperative effort between various groups including the State Departments of Transportation, U.S. Census Bureau, and the Federal Highway Administration. The data is a special tabulation of responses from households completing the decennial census long form. The data was collected in 2000 and is shown at tract level. This data can be found at http://www.transtats.bts.gov/Fields.asp?Table_ID=1338.

The second annual In The Drivers Seat Road Rage Survey, commissioned by AutoVantage, a leading national auto club, found that the least courteous city in the country is Miami, followed by New York and Boston. Its the second consecutive year that Miami claimed the top spot. The other two cities with the worst road rage were Los Angeles and Washington, D.C. The most courteous city is Portland, Ore., followed closely by Pittsburgh, Seattle/Tacoma, St. Louis and Dallas/Ft. Worth. The In The Driver's Seat 2007 AutoVantage Road Rage Survey, released today, was conducted to determine the driving habits and attitudes of commuters across the U.S. and to learn more about consumer views on the topic of road rage. ""Road rage has unfortunately too often become a way of life, both on and off the track,"" said NASCAR racing TV personality, radio host, best-selling author and AutoVantage spokesperson Liz Allison. ""More and more, in cities across America, people are acting out their frustrations with dangerous results. It's bad for professional and everyday drivers alike. ""Our Road Rage survey shines the light on emerging driving trends, and there are some very interesting results."" The survey's best and worst cities are: Least Courteous Cities (Worst Road Rage): 2007 2006 1. Miami 1. Miami 2. New York 2. Phoenix 3. Boston 3. New York 4. Los Angeles 4. Los Angeles 5. Washington, D.C 5. Boston Most Courteous Cities (Least Road Rage): 2007 2006 1. Portland, Ore. 1. Minneapolis 2. Pittsburgh 2. Nashville 3. Seattle/Tacoma 3. St. Louis 4. St. Louis 4. Seattle 5. Dallas/Ft. Worth 5. Atlanta Other cities surveyed include Phoenix; Chicago; Sacramento, Calif.; Philadelphia; San Francisco; Houston; Atlanta; Detroit; Minneapolis/St. Paul; Baltimore; Tampa, Fla.; San Diego; Cincinnati; Cleveland and Denver.

This dataset shows the comparison between the amount of spending that was spent on higher education and corrections by each state in the United States from 1987 to 2007. This data was brought to our attention by the Pew Charitable Trusts in their report titled, "One in 100: Behind Bars in America 2008." The main emphasis of the article emphasizes the point that in 2007 1 in every 100 Americans were in prison. To note: Many states have not completed their data verification process. Final published figures may differ slightly. The District of Columbia is not included. D.C. prisoners were transferred to federal custody in 2001

This dataset displays the number of persons killed in traffic accidents by state in 2006. This dataset also displays the Blood Alcohol Concentration (BAC) of those involved in the accident. Each category is broken down into the number of and percentage of the total accidents in 2006. This data was collected from the Fatality Analysis Reporting System at: http://www-fars.nhtsa.dot.gov/States/StatesAlcohol.aspx Access date: November 13, 2007 California and Florida lead the nation in total killed, while DC holds the least amount of persons killed.