I always thought they were producers of the show or actors masquerading as gang members. It always seems to be the same guy. He has a bandanna covering his face, voice disguised with audio, "We'll kill anybody fool! We don't care! Come through our hood, we'll kill you!!".

"...the successful annihilation of organized crime's subculture in America would rock the 'legitimate' world's foundation, which would ultimately force fundamental social changes and redistributions of wealth and power in this country. Meyer Lansky's dream was to bond the two worlds together so that one could not survive without the other." - Dan E. Moldea