[BELL RINGING]

[CROWD CHANTING]

- Tear gas first started down in the Commons, then the guard moved up on both sides of Taylor Hall, and forced the kids off the Commons. Then one group, I don't know how many there were, 50 maybe, perhaps more, perhaps less, moved down to the practice football field.

- After you feed them, then what will we do? Will you ask them to leave?

- They've got grievances. They've got demands. The demands on both sides. We have to talk.

YOUNG MAN: And then there were a whole lot of kids around him. A few kids were throwing sticks and stones. But that was only a handful, not more than 10, 15. And then the guard shot some tear gas up on the hill to disperse the crowd, and the kids picked it up and threw it back.

- Single file. I will make a perimeter, a circle, right out in here. From the right--

- [INAUDIBLE] we move out. You start a big circle around here.

- You don't talk during a state of emergency, Mike. You know that. Come on.

- I'm sorry. But I don't want people shot.

- We'll talk as soon as we get this settled down.

- I don't want people shot on this campus, just as a citizen of this country.

- Who wants people shot?

- All right, but they're sitting quietly.

- OK, will you ask them to leave?

- This area immediately. Leave this area immediately.

[CROWD CHANTING]

- And all of a sudden, I heard the shooting.

[CROWD CHANTING]

[GUN FIRE]

- And then I saw people dropping to the ground. And then I fell to the ground also. Because I couldn't walk anymore. And--

- What the investigators have to determine then is whether indeed there was a sniper, and whether the guard was justified in firing its weapons, or whether as some people here believe, the guard under the pressure of a rock throwing attack, panicked and fired its weapons indiscriminately, killing four people.

Ike Pappas, CBS News, at Kent, Ohio.