Sam Gregory (Program Director - WITNESS)

Sam Gregory is Program Director of WITNESS ( which supports anyone, anywhere to use video and technology to fight for human rights.

Founded after the Rodney King incident, WITNESS has more than 25 years of experience in 100+ countries, supporting critical uses of video to secure accountability, reaching millions of people with skills and tools, and maximizing civic participation via visual and social media.

An award-winning technologist, media-maker and advocate Sam currently leads work around emerging opportunities and threats to journalism and activism including innovation in eyewitness video and live-streaming, tools to better authenticate media and the challenges of AI and malicious deepfakes ( He has spoken at Davos and the White House, and taught at Harvard from 2010-18 on participatory media and human rights. He is Co-Chair of the Partnership on AI’s Working Group on Social and Societal Influence.

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