why we bang, i'm pretty sure is either a scam or hasn't been out yet.
if you want a gang documentaries, the 2 best that you can get your hands on, are "gang war 2: back in the hood" and "latin kings: a street gang story". the first one deals with crips and bloods in little rock. it's a follow up to "bangin in little rock" which aired in 1994 on HBO. latin kings a street gang story is about the rise and fall of their inca, king tone. the latin king one, i felt more cause it's filmed in NYC and i knew where most of the places were. but gang war 2 is more about bangin