Mardi Gras Indians have a tradition of showing off their costumes during Mardi Gras. The tribes have been around for over a hundred years and are the result of the reverence the Black slaves in the New Orleans area had for the Native Americans. The Native Americans often aided the slaves in the quest for freedom. The tribes parade to show their respect. In the 1930s, 40s, the gangs often killed each other over perceived wrongs. The costume contests began in the 1960s when the gangs (tribes) figured out that killing wasn’t a healthy choice. Now days, the tribes parade during Mardi Gras and at Jazz Fest.