David Heyman has spoken to Entertainment Weekly about the film's diversity relating to skin colour.
“Like all of Jo Rowling’s works, [Fantastic Beasts> is populated with a variety of people and that will be the same in this series over the course of the films,” Heyman says. “There will be people of various types of ethnicities. In New York in the 1920s, there was a segregation between white and black, the neighborhoods were largely separate, and that is reflected in [the film>. But the wizarding world is a much more open and tolerant society where people of color and different ethnic backgrounds exist harmoniously together. There are people of color filling this world in an organic way.”