I recommend everyone to watch this great movie. This fantastic movie shows a natural instinct in man, revealed through some uncivilized group of men.
The basic instinct in human beings is the survival instinct(survival of the species), loving, caring for the weak where selfishness plays no role. But in this movie where the people never cared about each other and reveals himself of a person of aggression, and shows their true nature.
I would have gone further if my battery wasn't about to die.