Stephen Colbert's Late Show makers put together an Avengers: Endgame parody video that transforms US president Donald Trump into Thanos, with rival Democratic party leaders taking him on as various superheroes. Joe Biden is seen as Captain America, who leads Cory Brooker as Doctor Strange, Alexandria Ocasio-Cortez as Mantis, Bernie Sanders as Drax, Michelle Obama as Pepper Potts/Rescue, Pete Buttigieg …