All that the Skull Island Orcs scene missed was a burning cross. It's been a while since I saw a major film with such a repulsively racist scene.
What's so racist about the natives? It may be a stereotype of natives, but I wouldn't put race as a factor. The natives don't really look like Africans to me. They actually look more like how I originally imagined Gollum from the Lord of the Rings! I did read though that Jackson took the look from actual photos of natives that even had the red eyes, though he undoubtedly took it to the extreme.I do think their depiction is a bit over the top though. In Jackson's film, they're complete savages. The natives never killed anyone in the original film.