Tinku

Tinku is a Bolivian Quechua tradition from Norte Potosí which began as a form of ritualistic combat. In the Quechua language, it means "meeting-encounter". During this ritual, men and women from different communities will meet and begin the festivities by dancing. The women will then form circles and begin chanting while the men proceed to fight each other; eventually the women will join in the fi... (Wikipedia)