Born in Jerusalem in 1941, Omar Mahmoud al-Qasim is a Palestinian freedom fighter whose family hails from the town of Tireh, where they resided until 1911 AD, after which they relocated to the village of Hable. He served as a cadre of the Democratic Front for the Liberation of Palestine (DFLP), and was DFLP's most important prisoner and a member of the DFLP Central Committee. He obtained his first degree from Damascus University and joined the ranks of the Arab Nationalist Movement. He was known for his leadership of the prisoners' struggles and movements and was an intellectual and an erudite theorist who left his imprint on generations of Palestinian leftist activists. He was murdered in Israeli prisons in 1989 after spending 22 years of imprisonment.

The collection includes photographs and documents belonging to the shaheed Omar al-Qasim, a member of the Democratic Front for the Liberation of Palestine (DFLP) in Jerusalem, which his sister, Amal al-Qasim, made available to the Digital Archive Project. It falls under the chronology of the Palestinian Prisoners Movement, as it contains many of the letters that al-Qasim wrote during his imprisonment in the Israeli Occupation prisons and sent to his family as well as to several activists, including the Jordanian-Palestinian freedom fighter Therese Halaseh. It also contains handicrafts that he produced during his imprisonment in the 1980s.
The collection documents photographs of al-Qasim's funeral in 1989, as well as of rallies in solidarity with him against his imprisonment, in which his mother participated. It also contains documents and personal photographs of the shaheed al-Qasim along with his family.