Colorblindness works in most parts of the world Citation please? I bet it only works where everyone is the same color (Norway?) or where there is a mix but no

Colorblindness works in most parts of the world Citation please? I bet it only works where everyone is the same color (Norway?) or where there is a mix but no history of one class oppressing another (Singapore?). In most places that come to mind, color/class is still an issue where oppression has been the legacy (South Africa, Australia, US, India, China). The hard part for the formerly oppressed is when the former oppressors say "let's all be equal now" after centuries of having an advantage