Created with Raphaël 2.1.2
Roseburg (2015)
32
Virginia Tech University (2007)
27
Sandy Hook School (2012)
23
Killeen (1991)
21
San Ysidro (1984)
14
Edmond (1986)
13
Columbine (1999)
13
Binghamton (2009)
13
Fort Hood (2009)
12
Washington D.C. (2013)
12
Aurora (2012)
12
Atlanta (1999)
10
Kinston (2009)
10
Jacksonville (1990)
10
Roseburg (2015)