Sam Gregory is the Program Director of WITNESS, which helps people use video and technology to defend human rights. Founded after the Rodney King incident, WITNESS has more than 25 years of experience in more than 100 countries, supporting critical uses of video to secure accountability, reaching millions of people with skills and tools, engaging technology giants on how their technology makes a difference, and maximizing civic participation via visual and social media. Gregory’s current work focuses on the threats and opportunities as emerging technologies such as artificial intelligence intersect with disinformation, media manipulation, and rising authoritarianism. An expert on new forms of misinformation and disinformation as well as innovations in preserving trust and authenticity, he leads WITNESS’s global “don’t panic, prepare” work on emerging threats such as deepfakes, emerging solutions such as authenticity infrastructure, and new opportunities such as livestreamed and co-present storytelling for action and smartphone witnessing for human rights. A former Young Global Leader of the World Economic Forum (YGL 2012–17), he is on the Technology Advisory Board of the International Criminal Court, co-chairs the Partnership on AI’s Expert Group on AI and the Media, and previously taught at the Harvard Kennedy School.