CAIRO - At least 2,000 people rallied in Cairo on Friday in a show of unity between Muslims and Christians after 25 people died when a protest by Coptic Christians led to clashes with the army. Sunday's violence, the worst since the fall of President Hosni Mubarak in February. On Friday the marchers in Cairo were mostly Muslims with some Christians. They waved Egyptian flags. Some participants wore black t-shirts with printed images of Mina Daniel, a young Coptic Christian activist who died during the clashes. "We are all Mina Daniel" shouted the demonstrators, echoing the popular anti-torture Facebook group called "We are all Khaled Said" which was named after a Muslim activist who rights groups said was beaten to death by police during Mubarak's era. "Muslims and Christians, hand-in-hand," they called out. The rally ran from Cairo's Al-Azhar mosque to the Cathedral of Abbasiya, Egypt's biggest church, before heading to Tahrir Square, the epicentre of protests that toppled Mubarak and now a central gathering point for many demonstrators. Christians make up about 10 per cent of Egypt's 80 million people.