Explore the map for further details—we do not consider it to be all-inclusive, but based on the criteria we used, we believe that we’ve produced the most comprehensive rundown available on this particular type of violence.
Fifty-seven of these mass shootings have occurred since 2006.
Seven of them took place in 2012 alone, including Sandy Hook.
The arsenal included dozens of assault weapons and semi-automatic handguns with high-capacity magazines.
(See charts below.) Just as a perpetrator used a .40-caliber Glock to slaughter students in Red Lake, Minnesota, in 2005, so too did the one in Aurora, along with an AR-15 assault rifle, when blasting away at his victims in a darkened movie theater.
Information on 33 additional mass shootings from 2013-2017 is included in our full data set here.