9/11 at 25: How Memory Fades Into History for a New Generation

As the United States marks the 25th anniversary of the September 11 attacks, a significant shift is underway: a growing number of Americans now understand that day not through personal experience, but as a chapter in history.

Jonathan David Hepworth, a lecturer in the Department of History and Geography at Clemson University, has been studying how the passage of time is reshaping collective memory of the event. His research focuses on how communities remember their past, and he now applies that lens to one of the most consequential days in modern American history.

Hepworth notes that memory is not passive. It is an active, living process, constantly reshaped by later experiences. People who remember exactly where they were on September 11 often hold those memories tightly because they are fused with the shock of the event itself. But those memories, he explains, are not static; they evolve as new experiences layer on top of old ones.

He draws on historian Richard White's metaphor of memory as a jar of pennies, where different years sit side by side and mix together. This blending means that later events — the wars in Iraq and Afghanistan, the Great Recession, the Covid-19 pandemic — become intertwined with the original memory of 9/11, even for those who lived through it.

For younger generations, the divide is even sharper. Hepworth observes that in his own classrooms, the number of students who were alive on September 11, 2001, has dwindled to nearly zero. Many now encounter the attacks primarily through textbooks, documentaries, and the recollections of parents and grandparents. Some students, he says, express interest in 9/11 precisely because they know people who remember it vividly — making it a historical subject rather than a personal one.

Hepworth also cautions against viewing the past through a contemporary lens. Life on September 12, 2001, he points out, was far more similar to 1996 than to today. Social media platforms like YouTube, Facebook, and TikTok — tools now central to how people consume and interpret breaking news — did not exist on the day of the attacks. Understanding 9/11 historically, he argues, requires setting aside those digital frameworks and trying to grasp how people experienced events in a world without them.

As the anniversary approaches, the distinction between memory and history becomes more pronounced. For those who lived through it, 9/11 remains a deeply personal turning point. For those who did not, it is becoming something else: a defining moment of the early 21st century, studied and interpreted from a distance, yet still powerful enough to shape how a new generation understands the world.