Melbourne 'traditionally' had Gangs among the RICH side of life.
Back when both cities (and States) were actually 'different'.
Melbourne had VFL (Domestic Code),
Sydney had ARL (International Code).
Sydney's 'gang' world lived among 'poor' of society.
Melbourne's was among the 'rich'.
Aboriginals (Domestic Blacks) were trouble in Sydney
Sudanese (International Blacks) are trouble in Melbourne.
Just like Asia shows North Americans who they're dealing with.
So too does Africa remind Australia - who's the boss.
Sydney or Melbourne: It's still where 'whities' take it up the clacker by the Blacks for fear of America labelling them 'racists'.