CAIRO -- Hundreds of Egyptians have marched through Cairo to commemorate 27 people killed last month in clashes with the military. The violence on Oct. 9 was the worst since the revolution that ousted President Hosni Mubarak in February.

Most of those killed were Coptic Christians who had been holding a protest.

In Friday's march, crowds of Muslims and Christians called for unity.

Several wore T-shirts marked with the ancient Egyptian symbol known as the Ankh, or key of life, and wore ancient Egyptian-style dress.

Coptic Christianity in Egypt dates back to the first century and the language used in its liturgy can be traced to the speech of Egypt's pharaohs.

Copts make up about 10 percent of the country's 85 million people and are demanding greater rights.