Memories of Stirling University students heckling the Queen
The Queen came to Stirling to open the new university on 12 October 1972.
What should have been a routine royal engagement turned into a worldwide news event as she was heckled by some students, with one even swigging from a bottle of wine.
It is difficult now to imagine the impact the incident had, especially on the reputation of the youthful university.
BBC Scotland's Raymond Buchanan has been speaking to two people who remember it well.