Well on the one hand, I see the connection Africa > Banana > Roberto Carlos > mixed race guy..
(but it is actually quite far fetched, and bananas are just..... silly! ) And Roberto Carlos is not even particularly black, is he? He looks a bit like a Southern European person to me. Greek maybe.
But Russians and vodka is the sort of example I was thinking of, but I couldn't think of a good example.
And is it racism on football matches, when the fans from other countries make the Nazi salute and shout "Sieg Heil" to the Germans? It happens every time they have an international game.
Personally I think both the bananas and the hitler salutes are tasteless, and the vodka would be an expensive joke.
People who can't behave like adults and respect a professional player like Roberto Carlos should be banned from games.