Photograph used for a story in the Oklahoma City Times newspaper. Caption: "Clouted students lie under troopers' batons in brief melee at OU. An estimated 3,000 students gathered at the University of Oklahoma administration building this morning for a noisy bu peaceful rally contrasting to the violence seething briefly Tuesday afternoon. At the administration's request, the planned protest rally became a memorial meeting for the four Kent State University students slain by the national guardsmen earlier in the week. But U.S. involvement in Cambodia and events that figured in the speeches and student outbursts. Beginning at 9 a.m., the meeting proceeded with an orderly succession of speakers until shortly before 11, when so...