NICE, France — The victims were striking in their diversity: young and old; men, women, and children.

There were 37 foreigners from 19 countries; about a third of those killed were Muslim.

On Friday, thousands gathered in the Mediterranean city of Nice, France, to commemorate the 86 victims killed one year ago when a terrorist drove through Bastille Day crowds on the city’s famous seaside promenade.

Around 10:30 on the evening of July 14, 2016, Mohamed Lahouaiej Bouhlel, 31, intentionally swerved a 19-ton rental truck onto the sidewalk of the Promenade des Anglais and careened into crowds as they were leaving the annual fireworks.