Police officials announced that the man killed by plainclothes narcotics officers in Brooklyn Sunday night had been on the FBI's Most Wanted list. Darin Richardson had shot and wounded a Cobb County, Georgia police officer in 2005 and had been on the run the past two-plus years. Richardson was being followed by police after they suspected he had a concealed weapon (he had been "fiddling with his waistband") as he left a bodega in East......