In the film, ten friends, who are children with monkey faces and tails, plan on going to the park for a picnic. They all ride there on their bikes, but each one meets a different fate on their way to the park as a result of their failure to follow specific bike safety rules (like not making hand signals, not reading traffic signs, not riding with traffic, riding double, or riding on the sidewalk). One by one, each of the friends makes a mistake and suffers a horrible fate. In the end, only one of the friends (who not only followed all the bike safety rules, but is also a normal human, whose face is not shown until the very end) makes it to the park and eats all the food by himself. At the start of the PSA, Slim gave the human his picnic because it was large and the human had a rear basket. Seeing this, the others persuaded him to take their food, meaning he has it at the end. Thus, as the title says, "One got fat!" Three of the Monkeys are seen in hospital beds.
Le cinéaste expose les traitements expérimentaux dispensés à 12 enfants atteints de troubles affectifs dans l’établissement de Warrendale, près de Toronto. Cet établissement, d’abord considéré comme novateur, s’est rapidement retrouvé au cœur de plusieurs controverses.
Les docteurs Carl Rogers et Richard Farson mènent une séance de thérapie de groupe avec huit personnes: parmi eux trois hommes d'affaires, un étudiant en théologie, un professeur, un directeur d'école, une femme au foyer et un employé.
William Peters follows Jane Elliott's conversely controversial and lauded schoolroom exercise of dividing an otherwise homogenous group of elementary school kids by their eye color. It was a demonstration of prejudice and discrimination meant to teach the students about the unfairness of racism, developed as a response to the shooting of Martin Luther King in April 1968. The film records Elliott in 1970 while conducting the exercise for the third time.
Le film apporte des témoignages de cinq soldats à propos du Massacre de Mỹ Lai intervenu en mars 1968 lors de la guerre du Viet Nam, et ayant fait plus de 500 victimes dont beaucoup de femmes, enfants et vieillards. Sur les 110 soldats qui ont participé au massacre, sept ayant démissionné de l'armée acceptent de témoigner, mais deux mentent en affirmant n'y avoir pas participé, et leur témoignage n'est finalement pas retenu. Sur les cinq autres, trois essayent de se justifier.