Two police officers (they are identical twins) drive recklessly down a street, they argue, one pulls a gun out and places it against the other's temple, shouting at him to apologize, and the men laugh and the gunman jokes that he would never shoot his brother, when they drive over a pothole and the gun discharges accidentally (blood and tissue sprays on the window of the car's interior); the dead driver's foot pushes against the gas peddle and the car smashes into a wall while we see a montage of clips of unrelated car accidents with crash test dummies slamming against walls.
A woman's shirt sleeve catches on fire, she taps her arm against her chest to put it out, her husband throws a glass of liquor at her, we hear the sound of flames igniting and see flames engulf the woman as a girl watches and screams; a boy's voiceover explains that the woman had died in the fire and we later see a woman experience traumatic flashbacks to her mother dying.
A man stares into the sky as a bullet falls from the sky (we see the bullet hit his forehead), and blood sprays from the wound as a woman's voice explains that a bullet fired into the air will fall back to the Earth.
A pre-teen girl punches a pre-teen boy; we hear a group of pre-teens cheering the pre-teen girl on, and then see the pre-teen boy with paper wadded up and shoved in his mouth (a teacher ignores the boy).
Children in a cafeteria shout at a boy, they throw open milk cartons at him and rush toward him, shouting; we later see the boy with a cut on his chin and nose, implied to have been from being attacked previously.
An older man slaps a man in the face, and they fight as a classroom of teenagers watch and cheer them on; the older man (a police officer) arrests the man, pinning his arm behind his back and handcuffing him and we later see the man with a black eye and the older man apologizes and thanks the man for not pressing charges.
A woman angrily slaps a man on the cheek twice, as a group of people watch.
A woman slaps an older man.
A man and a woman shake hands vigorously, we hear a crunch and the man pulls his hands away and rubs it.
A man catches a woman as she slowly collapses.
A man remarks to a boy that he would "probably faint if he weren't so heavily medicated."
A woman passes out.
An older man tries to jump over a sign, he trips and falls to the ground and stands up unharmed.
It is implied that an older man dies, and we see a woman (his daughter) crying and comforting a boy (the older man's grandson).
A pre-teen girl rips papers off her locker and shouts.
A boy and a man watch books burning in an empty swimming pool.
A man shouts in the middle of a room as we see a storm raging outside and the windows are open, causing thousands of post-it notes to swirl around him.
A woman threatens to kill a man.
A pre-teen girl half-jokingly threatens to kill a boy, and she then elbows him in the chest; he appears unfazed.
A woman sees a lost young girl crying, she experiences a flashback of her mother dying, and she collapses on the ground and cries.
A woman playfully punches her adult brother on the back repeatedly.
A pre-teen girl playfully shoves a boy as they laugh.
A pre-teen girl throws up in the back of a car (we hear the sound of vomiting and a woman in the front seat acts disgusted).
We see a newborn baby with a small amount of blood on his head.
A man's finger is seen being pricked, and a small amount of blood is seen on a microscopic slide; we later see a man, a woman and a pre-teen boy with bandages on their fingers from a blood test.
A boy shoots a spitball at a chalkboard next to a teacher's head.
We see a pre-teen girl's hair filled with spitballs; a teacher asks how she is doing, and the girl explains her day is no worse than other horrible days.
A pre-teen girl screams when she sees her father in a car and other pre-teens turn and stare at her as she continues to scream for a prolonged amount of time.
We hear a woman panting and screaming as she gives birth, and she shouts angrily at the doctor.
A boy shouts at his mother.
A man shouts angrily at a woman.
A teen boy shouts at a boy.
A woman shouts at her older father.
A pre-teen girl shouts at a group of people.
A pre-teen girl screams as she rides an amusement park spinning ride; she gradually stops screaming from fear and calms down.
A boy's voiceover explains that a young man had died of AIDS, but no one discusses how he got AIDS so it is "like he never existed."
A woman tearfully tells her son that she had met his uncle when he was one week old and then attended his funeral a week later; the boy says he recalls the funeral (despite being only two weeks old).
An older man tells a boy, in Spanish, that he did not imagine that he would outlive his sons.
A man dramatically tells his adult sons, young daughter and wife that he "would have been dead" if a lighter had not deflected a bullet aimed at him; the man then aims his finger, as a gun.
A doctor tells a man that the man has testicular cancer and that if he intends to have more children he should undergo sperm donation.
A pre-teen girl asks her father why he had not told her that he had cancer, and the man says that he does not believe it will "come back."
A young man tells his young sister that he did not want to stay in America out of fear that he would be drafted to go to Vietnam.
A pre-teen girl tells a boy that a retirement home "reeks of mothballs and menthol" and that the home depresses her.
A boy's voiceover explains that his grandmother had two pregnancies that had died in the womb.
We hear a television interview where a man is asked by a woman if he believes that "what he did to his daughter" is child abuse and we see a poster of a book cover featuring a pre-teen girl that says "Born Gay or Made That Way."
A boy tells a man that he had read about a pre-teen girl having a fear of dizziness, which leads to stomachaches and dizziness.
A boy and a pre-teen boy play violent videogames where they shoot zombies (we see blood spray from the zombies).