The head of South Korea’s Red Cross has resigned after being caught on tape making remarks about “dark-skinned” foreign diplomats – a scandal that has sparked public outrage, drawn a rebuke from the president and renewed scrutiny of racial prejudice in an increasingly diverse society.In the leaked audio, Kim Chul-soo was heard complaining that a recent Red Cross gala had been attended “only [by] the non-significant foreign ambassadors … just the dark-skinned people”, and instructed staff not to...