0:00 In 2026, the Transportation Security Administration launched a pilot program called Gateside.0:07 It lets certain travelers — members of TSA PreCheck — get a pass to walk their friends and family all the way to the airport gate, without a ticket.0:18 For anyone under the age of thirty, the idea of walking to a gate without being a passenger sounds like something from a history book.0:28 For twenty-five years, it was.0:31 That small change, a cautious relaxation of the rules, is a sign that we’ve reached the end of an era.0:38 It gives us a new vantage point.0:41 Today is the twenty-fifth anniversary of September eleventh, 2001.0:46 And with a quarter-century of hindsight, we can finally start to see the whole shape of the world that day created.0:55 We can see the decisions that were made in the smoke and the fear.1:00 And we can trace their consequences, which are still unfolding, right now.1:05 The story of the last twenty-five years isn't about what happened on 9/11.1:11 It's about what we did next.1:13 In the days after the towers fell, a question hung in the air.1:18 President George W.1:19 Bush voiced it to a joint session of Congress.1:23 "Americans are asking, why do they hate us?" He answered his own question.1:29 "They hate our freedoms – our freedom of religion, our freedom of speech, our freedom to vote and assemble and disagree with each other." But in the halls of power, a different, more practical question was taking shape.1:45 As one journalist put it, the central question in Washington was no longer about exercising global power.1:53 It was about how America could protect itself from an enemy with no army, no battlefield, and no front line.2:02 How do you fight a shadow?2:04 The answer America came up with would define the next generation.2:09 It was a two-front war.2:10 One front was overseas.2:12 The other...2:13 was at home.2:14 The overseas front opened almost immediately.2:17 In October 2001, the U.S.2:19 military invaded Afghanistan.2:22 The goal was to oust the Taliban government for harboring al-Qaeda, the group that planned the attacks.2:29 This was the start of the “global war on terror.” It was a war with no clear endpoint, against an enemy that wasn't a country.2:39 It was a concept.2:40 And that concept could be applied anywhere.2:44 The second front opened right here, in the United States.2:48 Just forty-five days after the attacks, President Bush signed the Patriot Act into law.2:55 This single piece of legislation fundamentally changed the balance between security and privacy in America.3:03 Before 9/11, government surveillance was difficult.3:07 It required specific warrants for specific people.3:11 The Patriot Act swept those restrictions away.3:14 It gave intelligence agencies vast new powers to collect information.3:19 Not just on foreign suspects, but on U.S.3:23 citizens.3:23 This is something a lot of people found confusing at the time.3:28 That's because the explanation most people got was missing a piece.3:33 The idea wasn't just to listen to phone calls.3:37 The real shift was about data.3:39 The Patriot Act laid the groundwork for the government to collect enormous amounts of digital information — who you called, what websites you visited, where you went — and to store it, and to search through it later.3:55 The debate was no longer about getting a warrant for a specific person.4:01 It was about vacuuming up EVERYTHING, and using algorithms to find the patterns...4:07 to find the threat before it materialized.4:10 The war on terror was also a war on data.4:14 And the battlefield was the everyday life of ordinary people.4:18 The most obvious legacy of this new world was at the airport.4:23 Flying was transformed overnight.4:25 Before 9/11, security was a checkpoint, but it was porous.4:30 You could show up thirty minutes before your flight.4:34 Your family could wait with you at the gate.4:37 After 9/11, that world vanished.4:40 In its place came the Transportation Security Administration — the TSA.4:45 And with the TSA came the rituals we now know so well.4:49 Taking off your shoes.4:51 The three-ounce limit on liquids.4:53 Full-body scanners.4:55 And, of course, reinforced, permanently locked cockpit doors.5:00 For twenty-five years, the airport has been the place where the war on terror was most visible, a constant, low-grade reminder that the world had changed.5:11 But the deeper legacy is human.5:14 Nearly three thousand people died on September eleventh.5:18 The tragedy, however, didn't end that day.5:21 The dust from the collapsed towers was a toxic cocktail of cement, glass, and asbestos.5:28 In the years that followed, tens of thousands of first responders, cleanup crews, and downtown residents began to get sick.5:37 Cancers, respiratory diseases, and other chronic illnesses.5:42 For years, the government was slow to acknowledge the connection.5:47 But the victims and their families fought.5:50 In 2010, they won.5:51 Congress passed the James Zadroga 9/11 Health and Compensation Act.5:56 It created the World Trade Center Health Program.6:00 Today, in 2026, that program provides medical care to nearly one hundred and fifty thousand members.6:08 It’s authorized to continue its work all the way until 2090.6:12 Think about that.6:14 We will be treating the health consequences of 9/11 for almost a century after the event.6:21 The dust settled in a day.6:23 The consequences are still in the air.6:26 The war that started in Afghanistan in 2001 did not end quickly.6:30 It expanded into Iraq and became a defining feature of American foreign policy for two decades.6:38 But the promise of remaking the Middle East in America's image, of spreading democracy at the barrel of a gun, curdled.6:47 The long, costly, and ultimately disappointing ends to the wars in Afghanistan and Iraq soured the American public on intervention.6:57 The U.S.6:57 withdrawal from Afghanistan in 2021 was a chaotic, painful end to America's longest war.7:04 It marked a major reversal.7:06 America didn't become isolationist.7:09 It just changed its approach to the world.7:12 The shift was profound.7:14 According to the Atlantic Council, U.S.7:17 foreign policy is now more transactional and less relational.7:22 It's more material and less idealistic.7:25 More nationalist, and less cooperative.7:28 Here’s what that actually means.7:30 The grand speeches about freedom and democracy are gone.7:34 In their place are hard-nosed calculations about American interests.7:39 Alliances are treated less like partnerships and more like temporary arrangements.7:46 The question is no longer "is it the right thing to do?" The question is "what's in it for us?" This was a direct consequence of the perceived failure of the war on terror.7:59 The idealism of 2002 was dead, replaced by the weary realism of 2026.8:04 And as the focus on foreign enemies faded, a new one took its place.8:09 The threat, Americans now believe, is not thousands of miles away.8:14 It's here at home.8:16 By the mid-2020s, public concern had decisively shifted from foreign terrorism to domestic extremism.8:24 The fear that had been directed outward for two decades...8:28 had turned inward.8:29 Here's the turn.8:31 Here is the part of the story we are only just beginning to understand.8:36 The tools America built to fight the war on terror never went away.8:41 They were just repurposed.8:43 The legal architecture, the surveillance technology, the very definition of "terrorism" — all created for a foreign enemy — were brought home.8:54 The Patriot Act was designed to hunt for al-Qaeda cells in America.8:59 But its powers were broad.9:01 And over time, they were used for things that had nothing to do with international terrorism.9:08 The same laws created in the panic of 2001 were eventually used to target drug cartels.9:15 And then, something else happened.9:18 During the political turmoil of the late 2010s and early 2020s, the Trump administration used those same Bush-era laws to designate domestic groups — specifically, four "antifa" groups — as terrorist organizations.9:34 Think about the implications of that.9:37 A framework designed to fight a foreign, non-state actor who had attacked the U.S.9:43 was now being used by the U.S.9:45 government against its own citizens for protesting against that government.9:51 Federal agents from Immigrations and Customs Enforcement — ICE — in Minneapolis used this designation to secure convictions against protesters.10:02 The enemy was no longer a shadowy figure in a cave halfway around the world.10:08 The enemy was an American, in an American city, disagreeing with American policy.10:14 This is the quiet, tectonic shift that happened under the surface of the last twenty-five years.10:21 The "war on terror" created an atmosphere of suspicion.10:26 It fueled Islamophobia and the profiling of racial groups.10:30 It created, as one reporter noted, an "era of blame and hate." But the most lasting consequence might be that it gave the state a powerful set of tools and a justification for using them.10:44 And once those tools exist, they are VERY hard to put away.10:49 The central question of 2001 was how to protect America from an enemy with no army and no front line.10:57 The answer we created — a vast apparatus of surveillance and a flexible definition of "enemy" — has now become a permanent feature of American life.11:08 The war on terror never really ended.11:11 It just changed its address.11:13 So what does this all mean, twenty-five years later?11:17 The legacy of 9/11 is not one story.11:20 It’s a thousand different threads that have woven themselves into the fabric of our lives.11:27 It's the airport security line, which is just now, barely, beginning to feel a little more normal.11:34 It's the one hundred fifty thousand people who still rely on a federal health program for illnesses caused by the dust of the fallen towers.11:45 It's a foreign policy that is more cautious, more transactional, and less willing to engage in the nation-building projects that defined the 2000s.11:56 But the sharpest insight — the one that matters most for today — is how the response to an external threat reshaped our internal world.12:06 The fear of "them" led to a system that could be used against "us." The political polarization, the erosion of trust in institutions, the feeling that your own neighbors might be the enemy — these are not separate from the story of 9/11.12:24 They are its conclusion.12:26 One analyst, writing about the immense cost of the post-9/11 era, had a chillingly simple observation: "Policies whose costs can be avoided, defrayed, or hidden are likely to be oversupplied." For two decades, the true costs of the war on terror were hidden.12:46 They were paid by soldiers in distant countries, by civilians in unnamed villages, and by the slow erosion of privacy at home.12:56 Now, those costs are no longer hidden.12:59 The legacy of September eleventh is not a memory.13:02 It's the world we inhabit.13:04 A world where the primary threat is no longer from the outside, but from within.