There's a very minimal amount of violence in "Consuming Kids".
The increasing amount of realistic violence being displayed in video games is discussed, but the segment lasts for perhaps less than a minute. Call of Duty-esque video games showing soldiers being shot to death are displayed, as well as a clip from "Manhunt 2" where a man is being sawed in half with a saw. The scene itself is implied, as it cuts out before actually cutting the man in half (we do hear him audibly scream, though).
Violence is movies is also discussed, and the segment is also very brief. We see a man's head being decapitated by a sword, several gun scenes where people are being shot at, or shot, and brief wrestling scenes, pulled from WWF, where the wrestler's face is bloody.