Shards of jagged brick and stone were flung high into the air, all falling on the Death Eater's side of the Shield Wall, making them scatter and flee in panic. Hermione watched them break rank to avoid the debris, and felt their Shield Wall collapse along with the dissolution of their discipline. Then the previously imprisoned witches and wizards came streaming up behind her, angrily hurling broken pieces of the house at their former captors, for they had no wands to take up against them.