April Ryan

White House Correspondent, MSNBC Political Analyst, D.C. Bureau Chief for TheGrio & Author

Diane Guerrero

Immigration Reform Activist & Actress Known for "Orange is the New Black" & "Jane The Virgin"

Brian Krebs

Leading Cybercrime Journalist & New York Times Bestselling Author of "Spam Nation"

Monica Lewinsky

Producer, Social Activist, Contributing Editor to Vanity Fair, Expert on Cyberbullying, Women's Issues & Reinvention

Monica Lewinsky Suits Up for Reformation's New Power Voting Campaign

Jon Steinberg

CEO of Future Plc., Founder of Cheddar; Former President & COO of Buzzfeed; Former CEO of Daily Mail.com in North America

Aaron Hurst

CEO of Imperative, Expert on the Science of Purpose at Work, Globally Recognized Social Entrepreneur & Author of "The Purpose Economy"

Josh Peck

Actor & Social Media Influencer

David Zinczenko

Founder & CEO of Galvanized; Former Vice President of Men's Health, Women's Health & Prevention; Retired Nutrition & Wellness Editor at ABC News

Shiza Shahid

Entrepreneur, Technologist, Investor, Impact Leader & Co-Founder of the Malala Fund and Our Place

Reshma Saujani

Lawyer, Politician, Founder of Girls Who Code & Marshall Plan for Moms

Phil Donahue

Creator and Host of "Donahue," the Long-Running Talk Show

Liz Wiseman

President of The Wiseman Group & Best-Selling Author of "Multipliers"

Sophia Bush

Actress, Humanitarian & Author

Steven Crowder

Conservative Commentator, Comedian & Former Fox News Contributor

Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

Don Lemon

Emmy Award-Winning News Anchor & Journalist, Author of "This Is The Fire"

Don Lemon To Launch New Show On X

Dr. Tererai Trent

Internationally Recognized Voices for Quality Education and Women’s Empowerment; Oprah Winfrey's "All-Time Favorite Guest"

Jim McKelvey

Co-Founder of Square, Serial Entrepreneur, Inventor, Philanthropist & Artist

Bob Goff

Founder of Love Does; New York Times Bestselling Author

Jeremy Heimans

Co-Founder & Chairman of Purpose; Best-Selling Author; Lifelong Activist & World-Renowned Expert on Building Social Movements