Video prompt: a crowd of people watching a Blue Angel jet fly during the annual Pensacola Beach airshow, which is a popular and well-attended event.
Defect: Deformation (any reason involved with a movement)
Explanation: The crowd merges into a single, indistinct mass, making it very difficult to recognize individual people. Each person experiences varying degrees of shape distortion, contributing to the blurred and unrecognizable appearance of the group.