sentences:  The post remained vacant for sixteen months until Robert Strotz, a member of the Economics faculty since 1947 and dean of the College of Arts and Sciences since 1966, was unanimously elected by the trustees to be President in July 1970.While Strotz's appointment was opposed by the "Daily Northwestern" and the Associated Student Government president owing to his positions opposing the closure of campus and politicization of university classes, he was supported by the faculty.In 1972, students voted to change the name of the athletic teams from "Wildcats" to "Purple Haze," but alumni and athletic directors opposed the change.