Digby has expressed concern that allowing Disney to define 9/11 to generations of schoolchildren is dangerous and will propagate myths that will define the debate for a generation. An example of this in practice is the widely held belief that lemmings commit suicide by walking off of cliffs. This was invented in a Disney documentary, though it is believed to this day.
Wikipedia describes lemmings thusly:
Lemming populations go through rapid growths and subsequent crashes that have entered pop-culture as a supposedly "widespread" phenomenon, largely because of the Walt Disney Pictures film, White Wilderness, which was produced in 1958 and reappeared on television at regular intervals for many years afterwards. White Wilderness popularized, using staged footage, the myth that during population booms Norway lemmings become suicidal and leap en masse off cliffs into the sea. For this reason, the term "lemming" is often used in slang to denote those who mindlessly follow the crowd, even if destruction is the result.
This was not just a simple misunderstanding or accident. The footage of lemming suicide was staged. Also from wikipedia:
White Wilderness famously contains a scene supposedly depicting a mass lemming migration, which ended with the lemmings leaping to their death into the Arctic Ocean; however, the entire sequence was staged. The lemmings were not even local (there are no lemmings in Alberta); the film makers arranged to buy wild-trapped lemmings from Inuit school children in Manitoba and transported them to the set. A few dozen lemmings, placed on a large, snow covered turntable and filmed from a variety of angles, became a mass migration. As a grand finale, the captive lemmings were herded over a cliff into a river (in the film, this was the "sea", and the herded lemmings were on a "suicide drive").
Generations of TV watching schoolchildren grew up on the Disney nature films, and the myth of lemming suicide persists to this day.
The ability for false information to influence schoolchildren is dangerous, and Disney has a long history of having problems with facts.