The gore and violence, again, will shock most people. With that said, if you're familiar with the brutal films in the genre then you're not going to blink an eye here. There's really nothing shocking, outrageous or too graphic if you're familiar with the films that I mentioned before.
The Green Inferno's message, therefore, appears to be that the native tribes were in the right to do what they did, due to their way of life being intruded upon.
