Peggy O'Donnell is a Ph.D. candidate in history at UC Berkeley. Her work focuses on the history of human rights, broadly conceived: rights in the context of atrocity or conflict, civil rights, labor rights, and women's rights. O'Donnell's current project is a history of mass-grave exhumations in the aftermath of atrocities and human-rights violations, and of how forensic evidence has been used to piece together the facts of what happened for the historical record and for prosecutions in international courtrooms. She is also a researcher for the technology program at the Human Rights Center at Berkeley Law. She tweets at @theAccidentalAc.