Syrians attempt to uncover fate of thousands detained and feared murdered under Assad

As we learn more about the atrocities committed by the Assad regime, investigations are underway at sites across that country. Authorities and relatives are trying to uncover the fate of the many thousands detained and feared murdered during Assad's rule. Simona Foltyn visited three mass grave locations and reports. PBS News is supported by - https://www.pbs.org/newshour/about/funders