How about "Love thy neighbour" even if their rougher elementos do not share quite the same sentiments.
Local City rivalry is not uncommon Ides, Donald Fagen wrote a song about it in the States, it's an animal territorial thing like dog's (or Westwood) pissing...
In fairness my neighbour right (my only real neighbour actually as I am a corner house) is a strange bloke. He hates football and only follows tennis. So that is 6 houses from my cul-de-sac.