US Mass Shootings, 1982–2021: Data From Mother Jones' Investigation – Mother Jones
Mass Shootings in the United States in 2021 - The New York Times
List of Deadliest Mass Shootings in the US
The US averaged at least 1 deadly mass shooting a month in 2018 - ABC News
Mass shootings in the United States - Wikipedia
Mass Shootings in the United States in 2021 - The New York Times
Florida is now home to two of the worst mass shootings in modern U.S. history | Blogs
Countries at Risk for Mass Killings 2018–19: Early Warning Project Statistical Risk Assessment Results | Early Warning Project
Mass shootings by shooter's race in the U.S. 2021 | Statista
Boulder shooting: Ten victims and suspect identified by police - BBC News
There have been at least 21 deadly mass shootings in the US so far in 2019 - ABC News
Mass shooting in the U.S.: Blame the NRA.
A List of Recent Mass Shootings in the United States - The New York Times
Mass Shootings Are Soaring, With Black Neighborhoods Hit Hardest
Presidents and Mass Shootings | National Affairs
mass shooting | Britannica
Mass shootings in the US have risen sharply in 2020 – why?
What is the reason behind mass shootings in USA? - Global Village Space
These are the 10 deadliest mass shootings in modern U.S. history - MarketWatch
Are Americans generally supportive of more restrictive gun control after so many mass shootings? - Quora
School shootings in the US compared with the rest of the world - CNN
