They could have easily shared the same classroom — the immigrant teenager and the veteran teacher known for his commitment to instilling the nation's ideals, in a relationship that had turned waves of newcomers into French citizens.
But Abdoullakh Anzorov, 18, who grew up in France from age 6 and was the product of its public schools, rejected those principles in a horrific crime that shocked and enraged France. Offended by cartoons of the Prophet Muhammad shown in a class on free speech given by the teacher, Samuel Paty, 47, the teenager beheaded him a week ago with a long knife before being gunned down by police.
France has paid national homage to Paty because the killing was seen as an attack on the very foundation — the teacher, the public school — of French citizenship. In the anger sweeping the nation, French leaders have promised to redouble their defense of a public educational system that plays an essential role in shaping national identity.
The killing has underscored the increasing challenges to that system as France grows more racially and ethnically diverse. Two or three generations of newcomers have now struggled to integrate into French society, the political establishment agrees.
But the nation, broadly, has balked at the suggestion from critics, many in the Muslim community, that France's model of integration, including its schools, needs an update or an overhaul.
President Emmanuel Macron's emphatic defense of the caricatures has also led to ripples overseas. Several Muslim nations, including Kuwait and Qatar, have begun boycotting French goods in protest. President Recep Tayyip Erdogan of Turkey questioned Macron's mental health in a speech, prompting France to recall its ambassador to Turkey.
Anzorov was the latest product of France's public schools to turn against their ideals: Two brothers who went to public schools in 2015 attacked Charlie Hebdo, the satirical magazine that published — and republished last month — caricatures of the Prophet Muhammad.
Jean-Pierre Obin, a former senior national education official, said that public schools played a leading role in "the cultural assimilation and political integration" of immigrant children who "were turned into good little French" and no longer felt "Italian, Spanish, Portuguese or Polish." Other institutions that also played this role — the Catholic Church, unions and political parties — have been weakened, leaving only the schools, he said.
It was in schools that immigrant children learned not only proper French, but also how to politely address teachers as "Madame" or "Monsieur." They also absorbed notions like secularism in a country where, much as in the United States, ideals form the basis of nationhood.
At least on paper, Anzorov seemed a good candidate to fit into French society. A Russian of Chechen descent, he arrived in Paris when he was 6 and entered a public primary school. When he was about 10, his family moved to Évreux, a city in an economically depressed area about 55 miles west of Paris and home to about 50 Chechen families, according to Chechens living in the city.
The Chechens largely kept to themselves in Madeleine, a poor neighbourhood with other immigrants, who are mostly from former French colonies and whose integration is often complicated by France's colonial legacy.
Anzorov attended a middle school called Collège Pablo Neruda that, hewing to the national curriculum, also offered civics lessons on secularism and freedom of expression. He lived in a rent-subsidised, five-story apartment building with his family, with a direct view of the local jail.
"He always passed in front of my place when going home," said Ruslan Ibragimov, 49, a Chechen who arrived in Évreux 18 years ago. "He was always alone, with his backpack. Even when he would see me from afar, he'd come over to greet me. He never talked much."
Never much interested in his studies, Anzorov was passionate about mixed martial arts, said a 26-year-old Chechen who also practices the sport. In 2018, Anzorov, then 16, lived for a while in Toulouse, where he had an uncle.
Unsuccessful in Toulouse, Anzorov came back to Évreux. His father, who specialised in setting up security for construction sites and other businesses, was encouraging his son to join him, Ibragimov said. The father had recently bought his son a car, he added.
"But he couldn't drive it yet because he still hadn't gotten his driver's license," Ibragimov said.
It was only in recent months that the teenager had shown signs of radicalisation, said the special anti-terrorism prosecutor, Jean-François Ricard. Anzorov's transformation appeared to have played out online, according to an analysis by French news website Mediapart of a Twitter account that he created in June and that was deleted last week after his death.
His posts on Twitter attacked a wide array of targets, including Jews, Christians and the rulers of Saudi Arabia.
Paty was a strong believer in laïcité, the strict secularism that separates religion from the state in France. Davoust recalled Paty once asking a young girl wearing a cross around her neck in school to take it off.
"Our democracy was established against the Catholic Church and the monarchy, and laïcité is the way that democracy was organised in France," said Dominique Schnapper, a sociologist and president of the Council of the Wise, a group created by the government in 2018 to reinforce laïcité in public schools.
In a class on freedom of expression — including the right to say blasphemous things about all religions — Paty used caricatures of the Prophet Muhammad, Jesus and rabbis to teach, former students said.
After his transfer a few years ago to Conflans-Sainte-Honorine, in a Paris suburb with a more diverse population, he appeared to adjust his approach. When showing caricatures, he began telling students who might be offended that they could leave the classroom or look away.
At the new school, students said he showed mostly caricatures of the Prophet Muhammad that had been published by Charlie Hebdo. One of the two shown this month was titled "A star is born" and depicted Muhammad fully nude. That upset many Muslim students and their parents, according to the local chapter of PEEP, a national parents association.
Paty said he was surprised by the backlash and apologised to students, said Talia, a 13-year-old student who was present at the lecture.
"He told us that he's a teacher, that this class is part of his program, that France is a secular country and so is our school," said Talia, who asked that she be identified by only her first name given the sensitivity of the situation.
One angry father complained about the teacher in videos he uploaded on social media. Enraged, Anzorov, the Chechen teenager, traveled all the way from Évreux to Conflans-Sainte-Honorine, nearly 60 miles, to kill Paty.
"Did he never have committed teachers? Or did he have them and he didn't hear them?" Schnapper, the president of the Council of the Wise, said of Anzorov's years in France's public schools. "We'll never know. But it's a sign of failure."
Written by: Norimitsu Onishi and Constant Méheut
Photographs by: Dmitry Kostyukov
© 2020 THE NEW YORK TIMES