There's a young, innocent character who is clearly marked for death.
Books have been doing this since the dawn of time. (Think Gavroche from Les Misérables, Little Nell Trent from The Old Curiosity Shop, Beth from Little Women.) (I retroactively apologize for spoiling those for you if you haven’t read them, but they were written in 1800s, get on board.)
That said, it’s such a hallmark of dystopian literature that I HAD to include it. Innocuous, dewy-eyed youths are CONSTANTLY dying just to galvanize the hero into further action, or to remind us that good people can’t survive here.