Given the nature of her fanbase, many of the people killed and wounded were children and teenagers.
Over the last few years, it seems the world can't go more than a few months without news of a terror attack, and Monday is yet another example of how the world has changed.
Sara Beardall and her 10-year-old were leaving the arena when they heard the blast. Although they weren't sure what it was, her daughter's first thought left her shocked. Beardall told CNN reporter Brooke Baldwin:
“Straight away she said, 'Is it terrorists? Are they coming to get us? Are we gonna die?'”
Baldwin also seemed to be shocked that a child as young as 10 instinctually thought of terrorism and death. The reporter confirmed she heard Beardall correctly, and the mother added:
“It seemed to be her first thought, and, you know, it's devastating really ... it just shows the awareness and the sad, sad world that we live in.”
ISIS later claimed responsibility for the deadliest terror attack in Britain since the 2005 7/7 bombings.