Uma Noite de Crime

According to director James DeMonaco, the famous road-rage incident awakening the idea for The Purge happened like this: He and his wife were driving on the freeway when a drunk driver cut them off nearly killing them. After both cars stopped, the other driver's lack of remorse enraged DeMonaco enough to engage in a fistfight and police eventually had to get involved. After the incident was over, DeMonaco's wife turned to him and commented how great it would be to have one free murder a year. He felt bad admitting this because she's normally a "sweet woman".

For a while in the middle of the movie, James has a shaped goatee and moustache, which he does not have during the rest of the movie.

At the end Credits there are radio broadcasting about the Purge Night.

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