The Purge (DVD)

If on one night every year, you could commit any crime without facing consequences, what would you do? In a near-future America, the government has sanctioned an annual 12-hour period in which all criminal activity, including murder, becomes legal: the Purge. On this night plagued by violence and an epidemic of crime, one family is tested to see how far they will go to protect themselves when the vicious outside world breaks into their home.