People in a Tehran district took to the street and clashed with security forces after two schoolgirls were reportedly assaulted by the principal of a school Monday.Social media users say one of the girls was shoved against the wall by one of the staff at the school at Karoun Street in southwestern Tehran when she and her classmates protested to humiliating body searches for mobile phones and the other was injured at a later stage when security forces were called in by the school to stop the students’ protest and chanting.Reports say the principal had forced the girls to strip down to their underwear to search for their cell phones and the children tried to resist the body search and started chanting against her.A video on social media shows over a dozen riot police in front of the school beating up some of the angry parents.Another video shows a group of parents in front of the school while an ambulance is parked outside the courtyard."