Like Mardi Gras, but occurs nightly on the corner of Simon-Bolivar and Earhart by the Greyhound station in New Orleans. Usually as the sun sets. Instead of beads, you catch bullets.
Tourist: I wonder what all that noise is...is it Mardi Gras?
New Orleanian: Nah man, that's just Nigger Gras...keep your windows up and hide anything that's shiny.