At least 2,000 people rallied in Cairo on Friday in a show of unity between Muslims and Christians and to express anger at the ruling military council after 25 people died when a protest by Coptic Christians led to clashes with the army, "Al-Arabiya" reported.
Sunday's violence, the worst since the fall of President Hosni Mubarak in February, prompted criticism that the council was resorting to the same brutal tactics that Mubarak's police force had used against dissenters.
Activists said armored vehicles had sped into crowds on Sunday and that troops had used live ammunition to disperse the protest in Cairo which took place after an attack on a church building in southern Egypt.
The incident sparked nationwide fears of growing sectarian tension in the Muslim-majority country.
In Sunday's protest, Christians who took to the streets accused Muslims of partially demolishing a church in Aswan province at the end of September. Muslims in the village say the building did not have a license, but deny attacking it.
Christians, who make up about 10 percent of Egypt's 80 million people, say Islamists have been using disputes over the legal status of some church buildings to stir up sectarian conflict.
