I've been looking for this online for a while and someone just posted these working links for it on LC. It's part of a History Channel series of documentaries on urban gangs. Haven't watched it yet but it should be interesting.
http://rapidshare.com/files/206020232/ganglandsfsu.part1.rar
http://rapidshare.com/files/206020235/ganglandsfsu.part2.rar
http://rapidshare.com/files/206027070/ganglandsfsu.part3.rar
http://rapidshare.com/files/206027073/ganglandsfsu.part4.rar
http://rapidshare.com/files/206020232/ganglandsfsu.part1.rar
http://rapidshare.com/files/206020235/ganglandsfsu.part2.rar
http://rapidshare.com/files/206027070/ganglandsfsu.part3.rar
http://rapidshare.com/files/206027073/ganglandsfsu.part4.rar