“Minorities are underrepresented compared to their numbers in the overall population by a factor of about 3-1 among lead roles in film and among film directors. That ratio is nearly 5-1 when it comes to screenwriters. On TV, minorities do best on cable, where they’re only underrepresented 2-1 among lead actors in dramas and comedies. Among show creators, the discrepancy is nearly 9-1 in broadcast, nearly 5-1 in cable. All this when ratings and box office tend to rise when casts match the nation’s racial and ethnic diversity.”