1999 Iranian student protests
The Iranian student protests of July 1999 (also known as 18th of Tir and Kuye Daneshgah Disaster (Persian: فاجعهٔ کوی دانشگاه) in Iran) (7–13 July) were student protests which were violently repressed by the Basij and Ansar-e Hezbollah. Before the 2009 Iranian election protests, they were the most widespread and violent public protests to occur in Iran since the early years of the Iranian Revolution.
Source: Wikipedia — 1999 Iranian student protests (CC BY-SA 4.0)