Idris Elba joined Winnie Mandela, the ex-wife of former South African president Nelson Mandela, and her daughter Zindzi Mandela, at the premiere of Long Walk to Freedom in Johannesberg.
Elba plays Nelson Mandela in the film which is expected to be released in the UK on January 3.
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The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.