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Available reporting and databases show that mass shootings by people known to identify as transgender in 2024 were extremely rare; major trackers and experts report either zero or a single historicall...
When researchers exclude gang- and crime‑motivated shootings, most major U.S. mass‑shooting databases count far fewer incidents and focus on “indiscriminate” public attacks — for example, Mother Jones...
Available data do not support the claim that most mass shootings are carried out with illegal guns; instead, most publicly documented mass attacks involve concealable handguns—the ownership and sourci...
Handguns are the single most common firearm type present in U.S. mass shootings, even as semi‑automatic “assault” rifles are disproportionately represented among the deadliest incidents (handguns: mos...
Available data and reporting indicate that a large share of U.S. mass shooters obtained their guns legally or were not prohibited from buying firearms: studies and databases note that "most" mass shoo...
Population differences matter because per-capita rates are the arithmetic used to make countries with very different population sizes comparable, but those rates can be highly sensitive to single even...
The short answer: mass shooters in the United States are not predominantly “liberals” or “conservatives” in the partisan sense—most mass shootings are driven by personal grievances, suicide, mental‑he...
Mass-shooting counts that exclude gang-related and other felony-motivated shootings show patterns that are localized, rare, and sensitive to how researchers define and count incidents: some long-run d...
Different definitions of “mass shooting” — varying by victim-count thresholds, inclusion or exclusion of injuries, motive, location, and data sources — produce wildly different counts and shape narrat...
Right‑wing extremist actors have accounted for the large majority of ideologically motivated mass murders in the United States across multiple datasets and timeframes; recent analyses report that far‑...
There is no single, authoritative percentage in the public record that definitively divides mass‑shooting guns into those traced to legal retail purchases versus those obtained via theft or straw purc...
There have been a very small number of high-profile shootings in the United States involving people who were reported to be transgender, but independent databases and fact checks show such cases are r...
Since 2000 the clearest, unambiguous demographic pattern in U.S. mass shootings is sex: perpetrators are overwhelmingly male, while other characteristics — race, age, socioeconomic status, and mental-...
Researchers studying long-running databases and case reviews find that a substantial minority — not a majority — of U.S. mass public shootings are linked to extremist beliefs: the best peer-reviewed s...
Over the past decade, reporting and research show some stable patterns (most public mass shooters are male, use handguns, and often knew their victims) alongside contested trends in frequency, weapon ...
Mass shooters are overwhelmingly male (near 98% in some datasets) and tend to be adults with an average age in the mid-30s; racial breakdowns vary by dataset but several analyses find white shooters a...