A movie named 'Air Force' (1943) was shown Wednesday night on Turner Movie Classics, cable channel, directed by Howard Hawks. It's a great action film about the Flying Fortresses in the Pacific. It's not entirely realistic, though, as it had the bombers flying from Pearl Harbor to the Phillipines and being used defensively to fight off Japanese fighters.
The surprising ('propaganda?'

part of the film though was that it showed the flight of B-17s from the mainland approaching Pearl Harbor just as the Japanese attacked on Dec. 7 1941. The bombers have to make emergency landings on other Hawaiian islands, where they are fired upon by civilian snipers, apparently Japanese residents from the Islands. For safety they take off and land at a devastated Pearl Harbor, where they learn that U.S. fighters had been sabotaged by civilian 'vegetable trucks from Honolulu' that smashed the tails off the U.S. planes, while civilian truck drivers elsewhere shotgunned soldiers in jeeps.
Isn't it now known that no such fifth-column sabotage by Japanese-Americans took place? And wouldn't that have been clear by 1943, when the film was made? Was this theme fictionalized as part of a propaganda war effort (the sneaky enemy everywhere) or just a thoughtless dramatic device?
Do any readers have other examples of blatant fictional propaganda in WWII-era movies?