Who's winning?
London-based artist Gustavo Sousa said this about his movie oceanaeuropeamericasafricaasia, based on the Olympic logo: "The rings represent healthy competition and union, but we know the world isn't perfect. Maybe understanding the differences is the first step to try to make things more equal."
He deliberately left out an explanation of the colors during the movie. He'd prefer we watch the comparisions and figure that out for ourselves. It's really not too difficult.