Karima Bennoune is a professor of international law at the University of California, Davis, and the author of Your Fatwa Does Not Apply Here.

Karen Armstrong, a former Catholic nun, is an authority on the Abrahamic religions and author of many books on the subject. Her most recent book is Fields of Blood: Religion and the History of Violence.

Neil J. Kressel is a professor of psychology at William Patterson University in Wayne, N.J., and the author of Bad Faith: The Danger of Religious Extremism. His scholarship focuses on religion, psychology, prejudice and race relations, history, journalism, politics and political research. He is an expert on religious extremism and anti-Semitism.

The Southern Poverty Law Center monitors hate groups and other extremists throughout the United States and exposes their activities to law enforcement agencies, the media and the public.

The ACLU addresses hate speech in its work on free speech, religion, LGBT rights, human rights and racial justice.

The No Hate Speech Movement is a youth campaign of the Council of Europe to reduce the levels of acceptance of hate speech online.

The Center for International Media Assistance is dedicated to improving U.S. efforts to promote independent media in developing countries around the world.

The Institute for War & Peace Reporting is an international not-for-profit organization governed by senior journalists; experts in peace-building, development and human rights; regional specialists; and business professionals. IWPR has offices in London; The Hague, Netherlands; and Washington.