Why 99% Of Movies Today Are Garbage - Chris Gore

Nobody is saying movies were never political, the argument is that the majority of political rhetoric these days on the screen is too one sided and not universal and accessible to understand and get behind by. Your statement about To Kill a Mockingbird being received differently today is a misfire because most people consider racism to be bad and immoral and the novel is a classic literary work. That, and the story is already very political to begin with - it is largely a court room drama. 

Speaking of which, your suggestion that only white people would be upset by politics in their entertainment comes across as pretty racially insensitive because there are lots of non-white people who agree most mainstream releases are too politically one sided and pandering.