This is not the America of Guess Who’s Coming To Dinner?, Stanley Kramer’s 1967 film in which Spencer Tracy and Katherine Hepburn played the gnarled old liberals grappling with their daughter Joanna’s decision to marry Sidney Poitier’s urbane doctor.
This is an America in which you can practically hear the cogs turn when people think.
Edgerton and Negga are both superb, giving heartrendingly fine performances as two people bewildered by the events that have engulfed them.
Either or both of them could well be in the frame for Oscar nominations next year.