The Purge, where for 12 hours once a year, the US makes all crimes legal. You can do whatever you want. Absolve all sin.

An annual Purge, where all crime is legal, allows us to function in a proud society where we can absolve all negative feeling without fear of the law, It lasts just 12 hours – from 7PM until 7AM. In that time, citizens are encouraged to “cleanse their souls” and unleash the hatred that each one of us holds within.