Sparticus actually existed. The movie had absolutely no pro-communist message.
I presume that you have not read the Hunger Game series of books, nor are you even loosely familiar with the story line. Am I correct there? If so, I would suggest that you read them. The governmental control in the series is a mix of ancient Rome and North Korea. The final message in the end is a twist, that points out that any government with too much power will be abuse the individual, not just those with bad intentions.
Rome allowed representation in their Gov't.Our founding fathers looked to many Roman institutions when they wrote the Constitution.
N. Korea is the opposite.
Howard Fast belonged to the Communist Party which loves to bash all Western institutions and history (including Rome). He was called before the House un-American Activities Committee and refused to cooperate. He won the Stalin Peace Prize. The making of the movie "Spartacus" was intended to help the communists blacklisted in Hollywood to find work again.
No, I haven't read Hunger Games yet but I probably will see the movie.