Typical Mardi Gras organizations will form a "krewe." A krewe often names their parade after a particular Roman or Greek mythological hero or god. The ranking structure of a Mardi Gras Krewe is a parody of royalty: King, Queen, Dukes, Knights and Captains, or some variation of that theme. Many of the more established krewes allow membership by invitation only.
Few in the ghetto felt they could ever participate in the typical New Orleans parade. Historically, slavery and racism were at the root of this cultural separation. The black neighborhoods in New Orleans gradually developed their own style of celebrating Mardi Gras. Their krewes are named for imaginary Indian tribes according to the streets of their ward or gang.