...is acceptable in America. That is not the case. Even if such a movie were to be financed and produced, corporate decision makers, the neoconservative legal system and the power elite would either censor or confiscate all of the negatives and/or digital data disks and most certainly attempt to kill or interfere with the distribution of such a film. Now that fascistic attitudes have infiltrated all levels of our country, the task of bringing out anything but the official version of the truth has become even more daunting. Those who seek to keep the truth from being known will find any error or inaccuracy grounds to ban a film. Regardless if a film contains any thread of truth about something which the ruling class believes is dangerous, such a film will never be allowed to be viewed by the masses in its original form.
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For nearly the entire history of film and movie production, certain films have been either boycotted by political and religious groups or literally banned by a regime for political or moral reasons. Paradoxically, banning a movie often completely fails to achieve its intention of preventing a movie from being seen—the publicity given worldwide to banned movies often results in it being given attention it might not otherwise receive.
With the advent of the Internet, the ability of groups or governments to ban a film is hindered. High-speed Internet access and better file compression give more people access to digital copies of movies that might not be available for viewing in theaters.
Many governments have commissions to censor and/or rate productions for film and television exhibition. From a government standpoint, the censoring of films is more effective than banning, because it limits the scope of potentially dangerous or subversive cinema without overtly limiting freedom of speech.
In the United States, there has never been national censorship. However, currently the motion picture industry maintains the MPAA Ratings, which are issued to individual films submitted to the MPAA as a means of identifying those with content not considered suitable for children and/or teenagers. The MPAA system is purely voluntary, for both movie makers and theaters. However, almost all theaters in the U.S. use the MPAA system, and many will refuse to show films which are unrated. From 1930 to 1964 film censorship boards did exist on state and/or local levels in some venues in the USA. The MPAA attempted to satisfy requirements of these disparate boards by creating films the Motion Picture Production Code in the late 1920s, another voluntary system designed and implemented by the MPAA. Films were either approved or not under the Code, and those that were generally had little or no problems passing muster with state or local censors.
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http://en.wikipedia.org/wiki/Banned_films