He stopped running when he heard the shouting - no, shouting wasn’t the right word: Umbridge was screaming, her painfully screeching voice echoing along the stone corridor, reverberating again and again into Harry’s ears so that she was all he could hear, though he couldn’t actually make out what she was saying. Ahead of him he could see the outer edges of the school’s population that had surrounded the headmistress. The students that glanced over their shoulders at his arrival looked frightened, and they were quick to part to let him push further forwards to Umbridge at the centre of the storm.