The Nazgûl scream comes from Peter Jackson's The Lord of the Rings film trilogy, where the Ringwraiths are heard unleashing their signature shriek during chase and battle scenes. Online, the sound spread through fantasy edits, reaction videos, and meme clips because it is instantly recognizable and communicates dread in a fraction of a second. It remains popular because even people who do not know the exact scene still read it as a warning sound, much like sudden suspense in modern short-form editing.