Ruth Negga on her latest role – as a black woman passing as white

Ruth Negga stars in Passing, a film which follows two black women living in 1920s New York.

One of them, Clare Kendry played by Negga, "passes" for white and has a white husband who doesn't know she's black.

Based on the 1929 book by Nella Larsen, the film received rave reviews at the Sundance Film Festival.

The film's director Rebecca Hall and star Ruth Negga, tell BBC News why their film feels so relevant for today's audiences.