A protester holds banner with a picture of jailed activist Mahienour El-Masry

Clashes erupt between supporters and opponents of Abdel-Fattah El-Si

Protesters respond by throwing rocks in Talaat Harb Square

Demonstrators light fireworks during the demonstration

Protester chants against the jailing of Mahienour El-Masry

Demonstrators chant for the release of all detainees

Demonstrators carry pictures of Mahienour El-Masry and other detainees

Protesters play drums during their march in downtown Cairo

Protesters chant for the release of all detainees outside the press syndicate

Protesters throwing rocks in Talaat Harb Square

Protesters chant for the release of all detainees during a march in downtown Cairo

Protester chants for the release of Mahienour El-Masry

Protester chants for the release of all detainees outside the press syndicate

Protesters carrying pictures of police violations

Protester carrying banner calling for the release of activist Mahienour El-Masry

Protesters outside the press syndicate before the march

Demonstrator carries a picture of Abdel-Fattah El-Sisi with the message "against you"

Demonstrators tearing up election posters of Abdel-Fattah El-Sisi