"The movie’s main character, Meg Murray, is described in the novel as a redheaded girl, but DuVernay cast African-American actress Storm Reid. DuVernay’s Meg is supposed to be biracial, with a white father (played by “Star Trek” actor Chris Pine) and a black mother (played by “Black Mirror" actress Gugu Mbatha-Raw).
DuVernay, who directed the civil rights film "Selma," told the New York Times she selected Australian actor Levi Miller to play Meg’s friend “because that was so powerful, to show a white boy following a black girl” throughout the movie.
It doesn’t help that “A Wrinkle in Time” must compete with “Black Panther,” which in addition to being acclaimed for featuring an overwhelmingly black cast has also gotten stellar reviews just for being a great movie."