Their children were killed. Now, Iranian mothers want justice.

Members of a group known as the Justice-Seeking Mothers" all have one thing in common: loved ones who were killed by the Iranian security forces during anti-government protests. Some have loved ones who are currently detained or at risk of execution. They hold regular meetings, attend gatherings at their children's grave sites, and are united by the goal of keeping their children's stories alive, and bringing the perpetrators to justice. The World's Shirin Jaafari reports.