Today marks the fourth anniversary of the uprising against Hosni Mubarak in Egypt.
Commemorations have come under intense scrutiny after a female demonstrator was killed during a rare left-wing protest in central Cairo yesterday.
Fellow protesters said she was hit when police fired to disperse the march.
Around 800 people are thought to have died in violent clashes before Mubarak resigned on the 11th of February 2011.
However Hosni Mubarak has been cleared in court of the murder of those who called for his removal.
