On Tuesday afternoon, the San Francisco Board of Supervisors approved an ordinance that would limit how police store and use DNA profiles obtained from evidence and kept in their labs. The changes happened after the district attorney’s office found the San Francisco Police Department had used DNA from a survivor’s rape kit to link her to an unrelated crime years later. It’s hard to know just how many people’s DNA was used in this way, raising concerns about what power law enforcement yields with advancements in DNA technology. Guest: Alex Emslie, reporter for KQED This episode was produced by Maria Esquinca and Christopher Beale, hosted by Ericka Cruz Guevarra and edited by Kyana Moghadam