The world's richest 100 people earned enough last year to end extreme poverty for the planet's poorest people four times over, Oxfam said. An "explosion in extreme wealth" was hindering efforts to tackle poverty, the charity said.
Barbara Stocking, Oxfam's chief executive, said a "global new deal" was needed to reverse decades of increasing inequality.
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.