What are the muslim brothers up to?

About 50 Muslim Brotherhood student members staged a military-style parade in black uniform and balaklavas during a protest Sunday by hundreds of Broterhood supporters at the Al-Azhar Islamic University campus. A security official told The Associated Press that the police had opened an investigation into whether the group has set up a militia. A Muslim Brotherhood leader denied any military training or setting an armed wing."We have no militia and no military wing," Mohammad Seyed Habib, the group's deputy leader, told the AP. This move on the Muslim Brothers side sparked concern in the government and among liberal opposition groups that the brothers are trying to undermine the authority of the state and encite violence.