None.

Multiple people yell in demonstrations.

There are multiple references to animal abuse, cruelty and killing for experiments.

There are some references to violence and threats between humans.

A rat endures a head surgery as a device is being implanted into its head. Some blood can be seen during the surgery, but nothing too graphic is shown. The footage can be little disturbing for some people.

A young disabled boy endures a head surgery. The operation itself is briefly shown, so some blood can be seen.

In some old video clips, several people from Animal Liberation Front go on rampage, breaking and destroying stuff and perform vandalism. In another footage, a building is burned.

During an interview, a man says "hell" once.

Protesters yell "scums" multiple times in a row.

An e-mail a boy is reading out contains lots of protanity and insults, including "scum", "bastard" and the infamous F-word.

The F-word can barely be heard a few times.

A man is smoking his cigarette. In an another scene much later in the film, the same man has finished smoking another cigarette.

An experiment involves anesthetic that makes a rat drunk and asleep before a head surgery.

Vivisection is one of the central themes of this documentary. The film itself contains footage of animal testing that can be disturbing for some.

Parts of the film center around a young boy who suffers from Parkinson's. This can be little emotional for some people.