
In 1971 A Clockwork Orange was rated X on its original release in the United States. Stanley Kubrick replaced 30 seconds of footage from two scenes with less bawdy action for a 1973 re-release, to get around the R-rating. All DVDs present the original X-rated form and there is now no A Clockwork Orange movie with an R rating.
In 2004 the movie Saw was shown at the Sundance Film Festival with the rating of NC-17 and was a huge success which lead to the main scene and the cuts and edits changed it to a rated R. There are little changes such as extra seconds of gore and death. But if it’s just small increments why edited the changes.

From 1951 to now the rating system has changed for the better or worst the rating do not tell you or advise you anymore there guidelines for the directors. The movies have change from rating to guiding how to make a movie. Why does it exist if it dictates the movie itself and not what the movie shows. The rating system is flawed and with it this way there should be no system just different genres of movies.