Last Friday night, what was meant to be a gripping soccer match between France and Germany turned into a nightmare.
Two suicide bombers detonated their vests outside stadium entrances, with a third blowing himself up near the stadium. One innocent passer-by was killed.
The explosions, audible in the stadium as the game was played out, resulted in the evacuation of President Francois Hollande from the arena. An organized pitch invasion by fans after the game was also carried out.
The attacks at the Stade de France marked the beginning of a co-ordinated assault by terrorists on the city. When it was over, 130 people had been killed.
One week on, the question of whether security at sporting events will change for good is a pertinent one.