In this powerful talk from TEDGlobal, Rebecca MacKinnon describes the expanding struggle for freedom and control in cyberspace, and asks: How do we design the next phase of the Internet with accountability and freedom at its core, rather than control? She believes the internet is headed for a "Magna Carta" moment when citizens around the world d...

Writer, producer and free-speech champion Norman Lear defined decades of US popular culture with his groundbreaking TV shows.

Vint Cerf, now the chief Internet evangelist at Google, helped lay the foundations for the internet as we know it more than 30 years ago.

Eva Galperin is director of cybersecurity for the online security organization Electronic Frontier Foundation, safeguarding the privacy of vulnerable populations.

Trevor Timm is the co-founder and executive director of Freedom of the Press Foundation, a non-profit organization that supports and defends journalism dedicated to transparency and accountability.

Margrethe Vestager is in charge of regulating commercial activity across the European Union and enforcing the EU’s rules designed to keep the markets fair.

Catherine Crump is an assistant clinical professor at Berkeley Law School who focuses on the laws around data and surveillance.

Dick M. Carpenter II studies cutting edge issues at the intersection of social science and constitutional law.

Danielle Citron writes, speaks and teaches her academic loves: privacy, free speech and civil rights. Through her work with privacy organizations, she also puts these ideas into practice.

Teresa Bejan writes about political theory, bringing historical perspectives to bear on contemporary questions.

Ethan Zuckerman studies how the world -- the whole world -- uses new media to share information and moods across cultures, languages and platforms.

Journalist Andrew Mwenda has spent his career fighting for free speech and economic empowerment throughout Africa. He argues that aid makes objects of the poor -- they become passive recipients of charity rather than active participants in their own economic betterment.