הטיהור [The Purge]

During the 12 hours of darkness of the night of purification, every criminal activity is defined as legal, until the siren is heard from the control room, and then order is restored. You find yourself in New York, surviving the last hour of the "purging"... and on the news in the background, it is announced that the control room of the purge has been attacked, and you are the last hope to stop the purge and the chaos that will result, and prevent a revolution in the country.