Since more whites than non-whites are shown throughout our pop culture as the people effecting change, the lesson inferred is that these individual cases we see in movies and on TV are the rule, when they're really the exception.
Many familiar independent booksellers are gone, and they've been replaced by big-box retailers with far sharper elbows. At the moment, they -- not the publishers -- appear to be controlling the book business.
In the past year I have read a book a day. Every day for 365 days. I didn't just read, I also wrote and posted on my website my response to what I'd read, my personal and visceral reaction to the book.