Vietnam-era students finally get to graduate
Fearing violence on campuses, some US universities shut early that summer and cancelled leaving ceremonies.
Forty years later, students who missed out are now returning to hold the events that were cancelled.
Many universities shut down, cancelling the end of term speeches, photographs and the caps and gowns of graduation ceremonies.
There were occupations, sit-ins, protest concerts and stand-offs with the authorities, and fearing violence, many universities cleared their campuses.
However there will also be a remembrance for more than 150 students from the university's class of 1970 who have since died.
The University of Cincinnati is also holding events for the students who missed out on leaving events in 1970.