In the mountains of Bolivia every year, the poorest people gather in high Andes villages to celebrate the festival of "Tinku".

There, the campesino men beat the crap out of one another.

 Drunk and bloody, they pound one another with just their bare fists, chanting, 

"We are men. We are men. We are men..."

They fight the way they have for centuries. 

In their world, with little income or wealth, few possessions, and no education or opportunity, it's a festival they look forward to all year long.

Then, when they're exhausted, the men and women go to church.

And they get married.