It is commonly claimed on social media that mass shooters in the United States are transgender, often as part of anti-LGBTQ narratives. However, studies and fact-checks show this claim is false. For example, after the assassination of Charlie Kirk in September 2025, a flood of false claims circulated about the shooter’s gender identity and political motives, none of which were supported by evidence. Misinformation framing trans people as violent is a persistent tactic used online to spread prejudice and fear.