French flags are seen lowered at half-staff in Nice on July 16. The truck attack on July 14 killed 84 people. "I felt coming to celebrate on holiday and people are in mourning didn't seem right," one vacationer says. "But I'm glad I came." Valery Hache/AFP/Getty Images hide caption

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A woman lights a candle on Monday in Nice, France, near a makeshift memorial for the victims of the deadly Bastille Day attack. Valery Hache /AFP/Getty Images hide caption

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People gather at a makeshift memorial to honor the victims of an attack on Friday, near the area where a truck mowed through revelers in Nice, France. Laurent Cipriani/AP hide caption

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NPR's Scott Simon and his family enjoyed the Bastille Day fireworks in Deauville, France. Scott Simon/NPR hide caption

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Balancing Safety And Celebration On The Streets Of France

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A forensic expert walks on near the seafront in Nice to gather evidence and transport the dead on Friday. A French-Tunisian attacker killed more than 80 people as he drove a truck through crowds watching fireworks on Thursday night. Clément Mahoudeau/IP3/Getty Images hide caption

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People lay flowers Friday near the seafront in Nice in tribute to victims of Thursday's truck attack that killed more than 80 people. France has suffered three major terrorist attacks since 2015 and appears as vulnerable as any Western nation. Clément Mahoudeau/IP3/Getty Images hide caption

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Forensic police investigate a truck at the scene of a terror attack on the Promenade des Anglais on Thursday evening in Nice, France. A French-Tunisian attacker killed 84 people as he drove a truck through crowds gathered to watch a fireworks display during Bastille Day celebrations. The Asahi Shimbun via Getty Images hide caption

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Flowers are laid out near the site of the truck attack in Nice. The attack ended when police shot and killed the driver. Luca Bruno/AP hide caption

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Darryl Curtis: 'It was awful ... I was afraid'

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The president of the commission of inquiry, former judge Georges Fenech (center left) and Socialist lawmaker Sebastien Pietrasanta (center right) look on during a press conference in Paris on Tuesday to present the conclusions of French inquiry into the terror attacks that rocked Paris in 2015. Dominique Faget/AFP/Getty Images hide caption

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Police patrol traffic in Paris as part of new anti-pollution measures aimed at punishing vehicles registered before 1997 that are forbidden to be driven during the week. Nearly 30 police officers stood guard on the morning of July 1, in the main squares of Paris to control and raise awareness among the drivers about the new measures. FRANCOIS GUILLOT/AFP/Getty Images hide caption

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To Fight Pollution, Paris Imposes Weekday Ban On Old Cars

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Mistafa Fanouni was the target of one of the more than 3,500 house raids that French police have carried out across the country since last November. After the raid, Fanouni was placed under house arrest until a court ruled in his favor to lift the arrest in February. Eleanor Beardsley/NPR hide caption

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Sweeping Raids In France Raise Concerns About Civil Liberties

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