Some old artworks show tribes-people wearing very little clothing. It's all non-sexual.

Violence and aggression are the sole themes of this documentary, which contains lots of video clips related to these topics.

Multiple old artworks, photos and video clips contain violence between humans and animal species.

A man performs some painful experiments on animals.

None.

One of the later non-violent footage has a man who can briefly be seen litting his cigarette.

Some of the old video clips of violence between humans can be intense, especially since they are all real.

Scenes of animal experiments can upset some people.