I don’t agree with censorship, but it’s naïve to think that people are not lead by what they see on film. Scottish nationalism shot up after the release of Braveheart, despite its historical inaccuracy.
I’m looking forward to the shocked reactions when a generation of Americans who grew up on Saving Private Ryan find out there were British troops fighting in WW2! But I digress.
This piece was clearly racist propaganda and unfortunately the elements of society that it was designed to appeal to still exist. You have to be careful as to how this material is exposed to people, making sure that context is careful explained.