The opening title sequence of The Purge uses CCTV footage from 2017 to 2021 to show violent crimes occurring during the annual Purge event. The footage depicts shootings, fights, arson, and other crimes happening across several US cities. Each clip displays the location, date, and a "Purge Feed" label to establish the setting and violent nature of the Purge. Fast cuts between aerial shots of the crimes depict the lawlessness and chaos of the event over multiple years. There is no diegetic sound, only a slow, high-pitched background song to accompany the disturbing visuals and set the ominous tone for the film.