The head of Columbia University's psychiatry department has been suspended after commenting on a photo of an African model using the phrase "freak of nature”.
Dr Jeffrey Lieberman shared a tweet discussing South Sudanese model Nyakim Gatwech. The tweet claims that the model is in the Guinness Book of World Records for having the "darkest skin ever seen on Earth”. That claim is false, as Guinness does not measure records based on skin colour.
