United States President Donald Trump is facing sustained political backlash after briefly sharing — and later deleting — a video on his Truth Social account that depicted former US President Barack Obama and former first lady Michelle Obama as apes. Trump has denied responsibility for the offensive imagery and refused to apologise. The episode has put under the lens the persistence use of racist tropes that date back centuries — imagery that many scholars say has been central to the dehumanisation of Black Americans during slavery, segregation and beyond. What the video showed The video in question was shared late...