growing up in a relatively shite area as a kid it was generally accepted that if you wandered around one of the schemes you didn't live in you were putting yourself at risk of a kicking

other than fighting with kids from the protestant school over the road i was never ever really part of a proper gang/young team/fleeto though, given the demographic of DiS i'm pretty sure there'll be at least a few folk who've dealt out the odd "shanking" to a "rude boy" for "slipping"

alternatively look at some of these incredible NY gang names -
http://www.nypost.com/rw/nypost/2012/09/04/media/NYYouthCrews.pdf

"cheese block"
"get touched boyz"