The part of the Champs-Élysées where they were standing lay less than halfway down from the Arc de Triomphe, just above the Art Nouveau glass houses of the Grand and Petit Palais. The triangle of streets that lay between this section and the River Seine was becoming known as the Golden Triangle, the Triangle d’Or, for as well as the American Cathedral church and the recently built Hotel George V, it was home to some of the richest people and most elegant enterprises in the city.

It wasn’t an area that Jacques Le Sourd would normally care to visit. But today he had come there, for the satisfaction of seeing it all shut down.

They crossed the Champs-Élysées. As they walked between the trees on the avenue’s northern side, Jacques glanced at his son with affection.

If he’d taken a long time to find a wife, his marriage was a happy one. He’d met Anne-Marie when he was forty and she was twenty-five, when she had come to work for the Socialist Party. He hadn’t thought of her as anything but a young colleague at first. But as he’d come to know her a little better, he’d been astonished by her direct and uncompromising mind. He’d never known any woman like her.

She was southern, with straight black hair and pale skin. Her father was a worker from Marseille, her mother a devout Catholic from the countryside of Provence, and she spoke with a Provençal accent. But everything else in her life she’d decided for herself. When he asked her if she was religious, she replied simply: “No one has ever given me any useful proof that God exists, so obviously I can’t believe in Him.” The idea of faith without proof didn’t make any sense to her.

In the same way, socialism wasn’t a passion or a religion with her—as it was for so many in the movement. She’d just decided that capitalism was unjust, and socialism was more logical. After that, she couldn’t see the point of arguing about it.

He had been fascinated by this strange girl from Provence. He found himself spending more and more time in her company. After a year had passed, they had become inseparable. “We may as well live together,” she’d remarked one day, “since we’re never apart.” When she became pregnant with Max, they’d married.

Max looked very like his father, but he was not quite so tall, and his face was finer, more Mediterranean. And though he had his mother’s talent for logic, his reactions to life were those of his father. They shared jokes, and even when they argued, they would often finish the other one’s sentences. Jacques was never more comfortable than when he was in his son’s company.

For some years now, Max had written for the communist paper L’Humanité, which was read across the nation. And he’d joined the Communist Party.

They reached the Place de la Concorde and stared across at the Tuileries Gardens and the Louvre.