This is the same type of PC lunacy as this ... which I have posted before :
I took my godchildren to see the production of The Railway Children at Waterloo Station. It was outstanding and I can recommend it to anyone.
Political correctness, as always, dictated that a percentage of black people be included, despite the fact that this detracted from the reality and was totally out of context.
Albert Perks (the station master) and his wife were played by white people, but one of their three children was black. Much to my amusement, the small child behind us said loudly to his mother : "Mummy if those people are white how come one of their children is black."
Kids are not stupid!