What Snopes Found: 21 9/11 Claims Examined in 25 Years of Fact-Checking

Snopes published a collection that reviews 21 claims about the September 11, 2001 attacks on the 25th anniversary of the event. The site emphasizes that while some images and reports circulating online were authentic, many repeated claims are false, misattributed, or rooted in rumor. The collection maps long-running narratives that have reappeared over the years and documents how fact-checking addressed each one.

The reviewed items fall into several categories: allegations of deliberate demolition, misattributed journalism or academic citations, viral photographs and videos whose provenance was disputed, and claims about individual actions or statements by public figures. Snopes both debunked claims and confirmed legitimate materials when evidence supported authenticity.

• WTC Building 7 demolition claim: Snopes found no evidence that the building's owner "admitted" Building 7 was brought down by controlled demolition. This claim has been a persistent element of conspiracy narratives.

• Authenticated photo of a bystander: Snopes confirmed the authenticity of at least one widely shared photograph that showed someone watching the Twin Towers burning.

• Misattributed academic article: Viral stories that presented an article by 9/11 "Truth" advocates as if it were published in a mainstream European scientific journal were shown to be wrongly attributed.

• Public-figure recollections and images: Claims about politicians and public personalities were checked against records and original footage. Examples include an examined claim that Joe Biden stood at Ground Zero the day after 9/11, which Snopes concluded did not match available evidence, and confusion around a photograph of Donald Trump in firefighter gear, which produced mixed interpretations.

• Other recurring rumors: The collection revisited long-running urban legends — for instance, whether a World Trade Center leaseholder purchased terrorism insurance just before 9/11 — and viral anecdotes that circulated around the immediate aftermath, such as disputed accounts of Starbucks charging rescue workers for water.

Snopes' broader work reviewed how internet-era rumor dynamics, emotional resonance, and political use of the attacks have sustained these narratives. The combination of real trauma, gaps in public knowledge, and the ease of sharing photos and quotes online creates fertile ground for unchecked or partially true items to be treated as definitive.

• Historic facts: The attacks killed nearly 3,000 people and produced decades of documentary material, investigations, and public debate. That complex record has encouraged repeated scrutiny and rumor.

Snopes' collection compiles 21 specific claims tied to 9/11 that the outlet investigated over 25 years. The work shows which items were false, which were misattributed, and which pieces of media could be authenticated, illustrating how rumors can outlast direct memory and continue circulating online.