Attorney and politician Bakari Sellers.
Professor Anthea Butler.
Comic and author Baratunde Thurston.
Comic Ali Siddiq.
Author Clint Smith.
Students Carly Novell and Delaney Tarr; director Lacey Schwartz; author Mat Johnson.
Activist Tarana Burke.
Professor John McWhorter.
Journalist Adam Serwer.
Author Ijeoma Oluo.
Author Michael Arceneaux.
Journalist Catherine Rampell.
Lauren Duca and Charlamagne Tha God.
Comic Roy Wood Jr.
Politician Ted Lieu.
Politician Stephanie Schriock.
Politician and author Vicente Fox.
Politician Jason Kander.
Lauren Duca, writer and columnist of "Thigh-High Politics" for Teen Vogue.
Chris Matthews, host of MSNBC's "Hardball with Chris Matthews" and author of "Bobby Kennedy: A Raging Spirit."
FCC Commissioner Jessica Rosenworcel.
John Della Volpe, director of polling at the Institute of Politics at Harvard.
Astronaut and author of "Endurance: A Year in Space, a Lifetime of Discovery," Scott Kelly.
Pulitzer Prize winning author of "Manhattan Beach," Jennifer Egan.
Author of "The Doomsday Machine," Daniel Ellsberg.
Newberry Award winner and New York Times bestselling young adult author Kwame Alexander.
Actor Paul Scheer.
Journalist Danica Roem.
Comic D.L. Hughley.
Author Bill Browder.
Political correspondent Molly Ball.
Journalist Sarah Lacy.
Comic Jeff Ross.
President of the Hispanic Federation, José Calderón.
Actor Jon Lovett.
Author and journalist David Daley.
Journalist Nikole Hannah-Jones.
Comic Bassem Youssef ("Tickling Giants").
National security analyst Clint Watts.
Erin Gloria Ryan, senior editor at The Daily Beast.
Director Rob Reiner ("LBJ").
Author Bruce Bartlett.
Massachusetts Attorney General Maura Healey.
Bill Nye ("Bill Nye: Science Guy").
Journalist and author Matt Taibbi.
Author Carol Anderson.
Writer Nate Silver.
Journalist Bill Kristol.
Author David Litt.
Journalist Jane Mayer.
Politico senior foreign affairs correspondent Michael Crowley.
Lawyer Richard Painter.
Associate Dean of Yale, Asha Rangappa.
Activist DeRay Mckesson.
Journalist Ruth Marcus.
Lawyer Neal Katyal.
Author Kurt Andersen.