WASHINGTON (AFP) - Nation of Islam leader Louis Farrakhan fueled a rumor that explosives, not Hurricane Katrina, broke New Orleans' dikes and flooded poor African American neighborhoods. ADVERTISEMENT "A member of the Army Corps of Engineers saw burn marks on the concrete," Farrakhan told reporters, describing an e-mail he had received. "They found two types of explosives used by the military," he said, without naming the source, adding that an eight-meter (25-foot) crater had been blown in the dike. Farrakhan said locals had reported sounds of explosions, among other things, leading him to believe the rumors should be investigated. "Wickedness...