Have any of you seen the movie The Purge?

I’ve recently seen this movie called The Purge. All criminal activity is legal during a 12 hour period. Anything goes, rape, murder, theft. There are however, two rules that must be abided by during The Purge. No government official ranking of 10 or higher can be harmed and weaponry above class 4 is forbidden. Also emergency services such as police and firefighters will not be available until after the time period. The true gem is anyone who does NOT follow the rules of The Purge will be executed.

The Purge is supposed to cut down on crime and unemployment.
Do you think this would really work in the real world?