The data displays the number of mass shootings in the U.S. between 1982 and June 28, 2018, by legality of the weapons used by the shooter(s). Between 1982 and June 2018, legally obtained weapons were used in 72 out of 101 mass shootings.
Legally obtained | 71 |
Illegally obtained | 15 |
Unknown/to be determined | 12 |
Some weapons were legally obtained others possibly illegally | 1 |