BBC News:- Facebook users who watched a newspaper video featuring black men were asked if they wanted to 'keep seeing videos about primates' by an artificial-intelligence recommendation system. Facebook told BBC News it 'was clearly an unacceptable error', disabled the system and launched an investigation. 'We apologise to anyone who may have seen these offensive recommendations.' It is the latest in a long-running series of errors that have raised concerns over racial bias in AI. 'Genuinely sorry' In 2015, Google's Photos app labelled pictures of black people as 'gorillas'. The company said it was 'appalled and genuinely sorry', though its fix,