Protesting students, chasing away an #Iranian official from their school, shouting: Shame on you…October 3rd… #MahsaAmini pic.twitter.com/eFmRhvaN2H — Rana Rahimpour (@ranarahimpour) October 3, 2022In another video from Karaj, which is just to the west of the capital Tehran, students are heard shouting: "If we don't unite, they will kill us one by one."In the southern city of Shiraz on Monday, dozens of schoolgirls blocked traffic on a main road while waving their headscarves in the air and shouting "death to the dictator" - a reference to the Supreme Leader, Ayatollah Ali Khamenei, who has the final say on all state matters.— Shayan Sardarizadeh (@Shayan86) October 3, 2022It's hard to put into context just how unprecedented these scenes are in Iran.#مهسا_امینی #MahsaAminipic.twitter.com/xxMatcVA7uA number of students were also photographed standing in their classrooms with their heads uncovered.He also gave his full backing to the security forces, which have responded to the protests with a violent crackdown.The unrest was triggered by the death of Mahsa Amini, a 22-year-old Kurdish woman who fell into a coma after being detained by morality police on 13 September in Tehran for allegedly violating the law requiring women to cover their hair with a hijab, or headscarf."