The small scar above Marion Barry's heart has had three decades to fade, but it's still noticeable -- evidence that some things don't disappear with time. For 39 hours in March 1977 -- before the word "terrorism" entered our daily vocabulary -- 12 gunmen paralyzed the District in a three-point siege. The group of Hanafi Muslims held about 150 people hostage in three buildings, and before they surrendered, a young reporter was killed and dozens were injured, including D.C. Council member Barry. A shotgun pellet pierced his chest, right above his heart, nearly killing him. -snip- The 12 gunmen had...