Sam Gregory helps people use the power of the moving image and participatory technologies to create human rights change. He is Program Director at WITNESS - the leading organisation supporting people to use video for human rights. He runs their 'Cameras Everywhere' initiative - focused on empowering millions of people to use video effectively, safely and ethically. He recently launched the Human Rights Channel on YouTube, and the ObscuraCam project he oversees was included in Wired UK's top 25 ideas for 2012.

In 2010 he was a Rockefeller Foundation Bellagio Resident on the future of video-based advocacy and in 2012 was named a Young Global Leader of the World Economic Forum. He speaks and writes widely on human rights and new technologies, currently focusing on citizen media as powerful human rights evidence, and promoting new understandings of anonymity in visual media. He has worked on impactful campaigns worldwide (particularly in Southeast Asia and Latin America), created innovative training programs and teaches at the Harvard Kennedy School. He has a Masters in Public Policy from the Kennedy School, attended as a Kennedy Memorial Scholar.