Perp Walk Definition

noun

The deliberate escorting of an arrested suspect by police in front of reporters and news cameras, especially as a means of pressuring or humiliating the suspect.

American Heritage

(chiefly US, idiomatic, law enforcement) The intentional public display before news cameras of someone in police custody, especially someone famous or notorious, for the purpose of satisfying public interest, demonstrating the authorities' effectiveness, or shaming the person.