Carole Pizzolante, from Ontario, Canada, is standing in a historic church in New York City, and she is trying not to cry. Before her is a wall, plastered with the faces of people killed on 9/11. “It’s all so bloody senseless, I can’t get through it,” she says with a wave of her hand, and then her composure falters. She pauses and says, through tears, “What could anyone gain from doing something like this?”