At times , video has shown protesters apparently turning on security forces . Nearly 90 Tehran professors sign letter to Supreme Leader Ayatollah Ali Khamenei . The signatories include some of the country's most prominent scholars, including former President Mohammad Khatami, who is considered a moderate and has been critical of Ahmadinejad's policies. Letter seeks apologies for beatings of university members and release of students , faculty . Anti-government demonstrations began following the disputed June 12 presidential vote .
Nearly 90 Tehran professors sign letter to Supreme Leader Ayatollah Ali Khamenei . The signatories include some of the country's most prominent scholars, including former President Mohammad Khatami, who is considered a moderate and has been critical of Ahmadinejad's policies. Letter seeks apologies for beatings of university members and release of students , faculty . Anti-government demonstrations began following the disputed June 12 presidential vote .