Adam G. Klein is Associate Professor of Communication and Media Studies at Pace University in New York City. With 15 years of experience studying extremism, he is the author of two books on the subject: Fanaticism, Racism, and Rage Online (2017) and A Space for Hate (2010). His work on radical voices in media and politics has been published in leading journals, including Communication Theory, Communication Monographs, and the International Journal of Communication. He has been a guest speaker on NRP, WNYC, and a frequent contributor to the news website The Conversation. His articles have appeared in The New Republic, Business Insider, Salon, and Yahoo News.