Mayim Bialik

Neuroscientist, Mental Health Advocate & Actress Known for "The Big Bang Theory"

Roland Martin

Award-Winning Journalist & Media Personality, Author of "Listening to the Spirit Within: 50 Perspectives on Faith"

Baratunde Thurston

Futurist Comedian, Writer & Cultural Critic

Baratunde In Media

Dambisa Moyo

Global Economist, Author & Investor in the Future

Norman Ornstein

Bestselling Author, Political Analyst & Resident Scholar at the American Enterprise Institute

Bill Maher

Political Satirist & Host of HBO's "Real Time"

Kevin Powell

Writer, Humanitarian, President of BK Nation

Leslie Sanchez

Media Entrepreneur, Author & Political Analyst for CBS News

Face the Nation - Anthony Salvanto, Leslie Sanchez, Amy Walter

John Kasich

Former Governor of Ohio

Garry Kasparov

World Champion Chess Expert & Strategist; Chairman of the Human Rights Foundation based in New York

Marcus Luttrell

Decorated Navy SEAL & Bestselling Author of "Lone Survivor"

John Stossel

Emmy-Award Winning Journalist

George Mitchell

Global Diplomat, Peace Negotiator & Leadership Expert; Former Senate Majority Leader Who Enjoyed Bipartisan Respect

John Oliver

Emmy-Winning Comedian, Best Known for "The Daily Show with Jon Stewart" & "Last Week Tonight"

Morton Kondracke

Political Commentator & Columnist

Michael Barone

Senior Political Analyst, Washington Examiner

Antonio Villaraigosa

41st Mayor of Los Angeles

Nikil Saval

Pennsylvania State Senator; Author of "Cubed: A Secret History of the Workplace"

Nikil Saval Launch Speech

Lawrence O'Donnell

Political Analyst, Author & Host of "The Last Word with Lawrence O'Donnell"