As a guest host, he also serves for shows such as “The Rachel Maddow Show,” “The Last Word with Lawrence O’Donnell,” and “Hardball.” He also began writing political columns for several news outlets like The Nation, The Atlantic, Reuters, and Politico. He has been a featured speaker at Oxford, Harvard Law School, Yale,Harvard’s Kennedy School of Government, the Columbia University Political Union, Georgetown University, USC, NYU, The Center for American Progress, Alpha Phi Alpha, the Lawyers Committee for Civil Rights Under Law, and several state bar associations. Ari was born on March 31, 1980 in Seattle, Washington, USA.