What an attack at an Ariana Grande show means for teen girls and their world

THE pink balloons, floating above the maelstrom of panicked concertgoers, are what struck me first. Images of innocence, bumping along above hordes of shrieking children, many of whom refused to release their balloons even as they fled the arena.

Do you remember your first pop concert? That first time you watched a female hero belt it out onstage without apologies? I was in eighth gr…