That's an absolutely ludicrous statement to make, for lots of reasons. Half!? I'm going to just leave some actual, scientific studies instead regarding race and gender in movies.
(17% of movies didn't even have a single speaking black character, as of 2013)
It takes a movie and cuts together every single word & sentence spoken by an actor of color. Often the intro music is longer than the compiled lines. Moonrise Kingdom: 10 seconds.
(17% of movies didn't even have a single speaking black character, as of 2013)
http://annenberg.usc.edu/pages/~/media/MDSCI/Racial%20Inequa... http://annenberg.usc.edu/pages/~/media/MDSCI/Gender_Inequali...