Given that my post earlier this week was all about uneasy racial divides, this seems like an appropriate choice.
Most people probably remember "Electric Avenue" for it's infectious chorus "We gonna rock down to Electric Avenue, and then we'll take it higher". But the lyrics are a reference to the 1981 Brixton riot, which was partly motivated by uneasy relations between Afro-Carribean Britons and the police. Just look at the second verse:
Working so hard like a soldier
Can't afford a thing on TV
Deep in my heart I abhor ya
Can't get food for the kids
So while racial divides are as old as humanity and leave everyone unsatisfied, at least great music can result from them.