Clashes broke out on Friday afternoon following an Islamist protest against the judiciary at Cairo's High Court.
The demonstration was called for by the Muslim Brotherhood's Freedom and Justice Party and other Islamist forces.
Violent clashes broke out between the Islamist protesters and unknown opponents, largely consisting of an exchange of rock throwing.
Ahram Online did, however, capture footage of two men on the Islamists side using firearms.
Another video shot by Al-Ahram's Arabic-language news portal showed some of the Islamists' opponents using firearms as well.
Police eventually intervened in the clashes. Footage shows the police talking with protesters on the Islamist side of the clashes, and firing towards their opponents.
The video also shows at least two men who were caught by the Islamist protesters and severely beaten.
Video by Simon Hanna