it was never like that before. >> what today's gds lack in unity they make up for in numbers. police estimate that 30,000 members live throughout the chicago area. they claim up to 3,000 city blocks as gang turf and they've expanded into more than 30 subu suburbs. their most recognizable symbol, a six-pointed star, honors their co-founder king david barksdale. and the sheriff's police are seeing it in more and more places. >> why'd you run, man? >> i just don't like being around police. >> are you gd? no, sir. >> these six-point star earrings in your ear? that's a star of david? >> tell us why you're wearing those earrings right now. you are a gd. you don't need to lie. we already know that.