The Iranian government arrested hundreds of student activists, journalists,intellectuals, political leaders and professors during weeks of unrest following a disputed June 12 presidential election that incumbent Mahmoud Ahmedinejad claims to have won, despite complaints of widespread vote-rigging.

VOA: standard.2009.12.07

"The understanding that I've developed has been that it was probably in the late 1960s or early 1970s or perhaps during a period of student unrest at the university, " he says.

NPR: The Curious Case Of A Missing Academy Award

Randle says if the plaque did disappear during the student unrest of the late '60s, it might have been thrown away by someone upset that the award had been given to a black woman for playing the role of a servant.

NPR: The Curious Case Of A Missing Academy Award

Father Ratzinger was initially a reformer, says Professor Tina Beattie of Roehampton University, but was appalled by the social unrest and student uprisings of the late 1960s.

BBC: News - Today - Benedict's big society