Iranian students protesting inside the campus of Tehran University light a fire 12 July 1999 in an attempt to combat tear gas fumes. Hundreds of neighborhood residents and passers-by have joined forces with thousands of students during a clash with anti-riot police in which security forces and Islamic volunteer militias responded with heavy barrages of tear gas. Iranian President Mohammad Khatami called for calm as the country's worst unrest since the 1979 Islamic Revolution entered a fifth straight day. (Photo by AFP) (Photo by -/AFP via Getty Images)
View rare and historical images of the bloody tragedy of Kuy-e Daneshgah (University Dormitory Complex) on 18 Tir 1378 (July 9, 1999), along with photos from subsequent anniversaries of the 18 Tir events.
Riot police and plain clothes security men block student pro-democracy demonstrators from entering Revolution Square, Tehran, 13th July 1999. The unrest is part of six days of demonstrations and rioting in Tehran and other major cities, which followed the death of a student in a police raid on 9th July. (Photo by Kaveh Kazemi/Getty Images)
Two Iranian students inspect a burned out room in the dormitory of Tehran University, 09 July 1999. Violent clashes erupted between Iranian security forces and students protesting tough new press restrictions, leaving number of people injured according the official Iran news agency. (Photo by AFP) (Photo by -/AFP via Getty Images)
(Original Caption) Following the closing of a newspaper, students took to the streets in Iran in protest. (Photo by Mohsen Shandiz/Sygma via Getty Images)
Iranian students protesting inside the campus of Tehran University light a fire 12 July 1999 in an attempt to combat tear gas fumes. Hundreds of neighborhood residents and passers-by have joined forces with thousands of students during a clash with anti-riot police in which security forces and Islamic volunteer militias responded with heavy barrages of tear gas. Iranian President Mohammad Khatami called for calm as the country’s worst unrest since the 1979 Islamic Revolution entered a fifth straight day. (Photo by AFP) (Photo by -/AFP via Getty Images)
(FILES) — File picture dated July 10, 1999 shows an injured demonstrator waving his arms in anger during a protest in the center of Tehran following overnight violent clashes that erupted between Iranian security forces and students protesting tough new press restrictions. Iran authorities, still reeling from the massive public protests over last month’s election, warned on July 9, 2009 of a harsh crackdown against any demonstration to mark the anniversary of student unrest which rocked the Islamic republic on this day in 1999. AFP PHOTO/ATTA KENARE (Photo credit should read ATTA KENARE/AFP via Getty Images)
Iranian students cover their faces in protection from a tear gas bomb that was thrown at them in one of the streets of Tehran, 13 July 1999 as the country’s worst unrest since the 1979 Islamic Revolution entered its sixth straight day. Students chanting slogans in support of Iran’s reformist President Mohammad Khatami, clashed with club-wielding anti-riot police and Islamic militiamen despite a government ban on demonstrations declared late 12 July 1999.. (Photo by AFP) (Photo by -/AFP via Getty Images)
Iranian riot police stand guard at the entrance of Tehran University 09 July 2002. Clashes between Islamic Bassij militia and groups of young people defying a ban on rallies erupted in the Iranian capital today on the anniversary of July 1999 student unrest. The violence broke out as security forces in anti-riot gear tried to disperse between 5,000 and 6,000 students and others who gathered at university’s campus and in neighboring streets. AFP PHOTO/Behrouz MEHRI (Photo by BEHROUZ MEHRI / AFP) (Photo by BEHROUZ MEHRI/AFP via Getty Images)
TEHRAN, IRAN: Iranian riot police disperse a pro-reform demonstration near Tehran University 09 July 2002. Clashes between Islamic Bassij militia and groups of young people defying a ban on rallies erupted in the Iranian capital today on the anniversary of July 1999 student unrest. The violence broke out as security forces in anti-riot gear tried to disperse between 5,000 and 6,000 students and others who gathered at university’s campus and in neighboring streets. AFP PHOTO/Behrouz MEHRI (Photo credit should read BEHROUZ MEHRI/AFP via Getty Images)
Iranian policemen monitor a demonstration by students outside Tehran University 08 July 2000 in commemoration of last year’s violent clashes between protesting students and police at the university’s dormitory. Iranian security forces arrested about 20 student demonstrators when they intervened to disperse the peaceful rally. On May 30, death sentences against four student leaders involved in last year’s unrest were commuted to 15 years in prison. (Photo by BEHROUZ MEHRI / AFP) (Photo by BEHROUZ MEHRI/AFP via Getty Images)
An Iranian female protestor clenches her fist and covers her face in front of a burning trash bin during an opposition rally in Tehran on July 9, 2009. Iranian police fired tear-gas as thousands of demonstrators defied government warnings and staged a march to commemorate the anniversary of bloody student unrest in 1999, witnesses said. AFP PHOTO/STR (Photo credit should read -/AFP via Getty Images)
TEHRAN, IRAN – JULY 9: Protestors gather and burn rubbish in a street on July 9, 2009 in Tehran, Iran. Following recent unrest in the wake of the disputed presidental elections, demonstrators were met by force and tear gas rounds fired by Iranian police and Basij as they defied government warnings to stage a march in commeration of the anniversary of bloody student unrest at Tehran University in 1999. (Photo by Getty Images)
