Sarah St. Vincent is a researcher and advocate on national security, surveillance, and domestic law enforcement for the US Program at Human Rights Watch. She has investigated and documented the deliberate concealment of surveillance-based and other evidence from US criminal defendants, the Defense Department's monitoring of "homegrown violent extremists," and the potential use of US intelligence surveillance for anti-drug purposes. Before joining Human Rights Watch, she was a legal fellow on international human rights and surveillance at the Center for Democracy & Technology. She writes regularly about surveillance, privacy, and related issues under US and European Union law and is a member of the New York bar. @SarahStV_HRW