All Quiet on the Western Front
You might not have heard of this movie before (probably because it came out in 1930) but you do probably know exactly what the subject matter is nowadays. Back when America was drafting soldiers during the consecutive World Wars, All Quiet on the Western Front was released, and it showed the terrifying happenings on the frontlines of the war. This movie was viewed as anti-patriotic and was shielded from American audiences, not banned though.
Banned By the Right People
Fortunately, America was fighting for the morally correct side of history. So, the American government was willing to stop shielding the movie from society and allowed it to be shown in theatres through the 1930s and 40s. However, during the same time, this movie was banned in Germany for its anti-Nazi stance, and it was banned in Australia and New Zealand to promote pro-war efforts within their small communities.