A few dozen protesters gathered in the Syrian city of Douma on Wednesday to demand answers in the disappearance of four prominent activists who were abducted more than a decade ago. The demonstrators called on Syria’s new rulers — the Islamist-led rebels who seized power last month — to investigate what happened to them. The disappeared activists in question are Razan Zaitouneh, her husband, Wael Hamadeh, Samira Khalil and Nazem Hammadi. On Dec. 9, 2013, unidentified gunmen stormed the Violations Documentation Center in Douma, northeast of Damascus, and abducted the four activists. At the time, Douma was held by rebels.