Forced miscegenation in cinema

Well, it's no scoop; this isn't a new phenomenon by any stretch of the imagination.

Someone please tell me le Carré wrote Gail Perkins as a black woman. Yes? Somehow I think this unlikely.
But, of course, accuracy or honesty never get in the way of Hollywood (or its lapdogs elsewhere in the world) making their usual pro-multicultural propaganda.
Put aside any ideological or principled bent and you would still regret the casting choice if only for the sake of verisimilitude: I do think you'd have to search very far indeed to find a White university professor married to a Black successful lawyer.