In late April 2022, a Syrian defector leaked a video of the Tadamon massacre. Hundreds of Syrian families watched the clip, hoping to learn what had happened to their missing sons.
The Siyam family watched it, too. Their son, Waseem Siyam, left his home in Damascus in the early morning of April 14, 2013. He had been ordered by the government to deliver flour to a state-run bakery in the city’s southern Tadamon neighborhood. The 34-year-old…