My feeling was that somehow the movie was a warning; if you rebel against the governing elite you will be imprisoned and forced to work at a poverty level providing for the needs of the elite. The elite rulers are portrayed as shallow, egotistical, and ruthless. Wow that sounds familiar...
The story line changes as in the next two books. I am waiting for a forth book to come out, and wonder if the next three books will be made into a movie.
By the way Suzanne Collins has also written a 5 book series called The Underland Chronicles, and is as well written as the Hunger Games. Books listed on the right side bar.