Mass Shootings and Assault Weapons

UPDATE: This post has been updated to include the El Paso, TX and Dayton, OH shootings that occurred over the 24-hour period on August 3rd and 4th, 2019. 

In his book “Rampage Nation” Louis Klarevas of the University of Massachusetts at Boston notes that gun massacres (defined as a shooting incident in which six or more people are shot and killed) fell 37 percent during the period the federal assault weapons ban was in place between 1994 and 2004, and that in the ten years after it lapsed, they went up an alarming 183 percent.

See for yourself:

Below are the deadliest mass shootings in modern US History. Note that only two (Columbine and Atlanta, both in 1999) occurred during the 10 year period (1994 – 2004) the assault weapons ban was in place.
Shootings where a semi-automatic rifle was used are highlighted.

Incident

Year

Number Killed

Number Injured

El Paso Texas

2019

20

26

Dayton, Ohio

2019

10 (incl. the perp)

26

Tree of Life Synagogue Shooting

2018

11

6

Santa Fe High School shooting

2018

10

14

Stoneman Douglas High School shooting

2018

17

17

Las Vegas shooting

2017

59 (incl. the perp.)

851 (422 from gunfire)

Sutherland Springs church shooting

2017

27 (incl. the perp.)

20

Orlando nightclub shooting

2016

50 (incl. the perp.)

53

San Bernardino attack

2015

16 (incl. both perps.)

24

Umpqua Community College shooting

2015

10 (incl. the perp.)

8

Washington Navy Yard shooting

2013

13 (incl. the perp.)

8

Aurora shooting

2012

12

70

Sandy Hook Elementary School shooting

2012

28 (incl. the perp.)

2

Binghamton shootings

2009

14 (incl the perp.)

4

Fort Hood shooting

2009

14

33 (incl the perp)

Geneva County massacre

2009

11 (incl. the perp.)

6

Virginia Tech shooting

2007

33 (incl. the perp.)

23

Red Lake shootings

2005

10 (incl. the perp.)

5

Atlanta shootings

1999

10 (incl. the perp.)

13

Columbine High School massacre

1999

15 (inc. both perps.)

24

Luby’s shooting

1991

24 (incl. the perp.)

27

GMAC shootings

1990

10 (incl. the perp.)

6

Edmond post office shooting

1986

15 (incl. the perp.)

6

Palm Sunday massacre

1984

10

0

San Ysidro McDonald’s massacre

1984

23 (inc. the perp.)

19

Wah Mee massacre

1983

13

1

Wilkes-Barre shootings

1982

13

1

Easter Sunday massacre

1975

11

0

University of Texas tower shooting

1966

18 (incl. the perp)

31

Camden shootings

1949

13

0

Additional reading:

Wounds from Military-style Rifles? A Ghastly Thing to See – New York Times

With AR-15s, Mass Shooters Attack With the Rifle Firepower Typically Used by Infantry Troops – New York Times

Why the AR-15 keeps appearing at America’s deadliest mass shootings – USA Today

Is It Time to Bring Back the Assault Weapons Ban? – Statista

Assault guns are not just about mass shootings — they’re also a big factor in attacks on police and other crimes – LA Times