At least 99 protesters were injured in the violence, and there were unconfirmed reports of at least one fatality. The unrest further sharpened the divisions between the country’s powerful military, an increasingly assertive civil society and a political class set to take the reins after the toppling of President Hosni Mubarak earlier this year. At least three members of a constitutional advisory board created by the military quit in protest, following the footsteps of Islamists who ended their participation last week.  “I came here to support the revolution against the military powers,” said Sadegh Helmy, a professor of medicine at Cairo University. “Ten months after the revolution there are people still being tortured. This is not acceptable.”