"To Kill a Mockingbird" was filmed in 1962 after John F. Kennedy signed new civil rights laws. There was also an actor's union in existence at this time which had set pay rates for actors based on the role, hours, and billing in the movie. As far as the prejudice is concerned, yes, there was and still is prejudice in the world but it did not influence the salaries of the actors in this movie. The Screen Actor's Guild is a strong union and people can't even get hired for a movie unless they are members. The Actor's Equity Union was established in 1913 and has tried to keep unfair practices to a minimum. Hope this helps.