Who is in charge of this......?

I rented a movie, I looked at the Genre and it said "family", soooo I thought this is perfect for my "family"......ummm yah, thats a BIG NO!  Who is in charge of deciding which film fits which genre?  Seriously, ok so maybe I should google the answer to this question (I looked couldn't find the answer, help)!  Oh I bet you are wondering what film I am referring to, "we bought a zoo".   The Genre I would chose would be Drama, just sayin.  The film was lousy by the way, it barely kept my attention.  Matt Damon and Scarlette Johansson you let me down, the little girl was cute though. And thats my movie review of the week!  :)