https://www.gunviolencearchive.org
https://www.gunviolencearchive.org/reports/mass-shooting?year=2019
https://www.gunviolencearchive.org/query/6ee47435-8f64-47b1-a487-17f5a6efefdd?page=3
https://www.amjmed.com/article/S0002-9343(15)01030-X/fulltext#sec1.1
https://en.wikipedia.org/wiki/Gun_culture_in_the_United_States
https://www.statista.com/statistics/215655/number-of-registered-weapons-in-the-us-by-state/
https://www.statista.com/statistics/476409/mass-shootings-in-the-us-by-weapon-types-used/
