Kristy Slominski is a doctoral student at the University of California, Santa Barbara. She is an expert on gender and sexuality in American religious history.

Katharine Hayhoe is a professor of political science and co-director of the Climate Science Center at Texas Tech University. She is also the co-author of A Climate for Change: Global Warming Facts for Faith-Based Decisions. Hayhoe is an expert on Christian responses to global warming, and she works to reconcile science and faith in Christian communities.

The Dangerous Speech Project works to prevent violence by diminishing the harmful effects of inflammatory public speech without harming freedom of expression. The project’s focus countries include Canada, Kenya, Myanmar, Nigeria, Sri Lanka and the U.S. Contact Susan Benesch.

The Freedom of Expression Institute was established in 1994 to protect and foster the right to freedom of expression in South Africa. Contact Sheniece Linderboom.

The Hrant Dink Foundation has run the Media Watch on Hate Speech project since 2009 to counter racist and discriminatory discourse in Turkish press.

Free Speech Debate, based at the University of Oxford, has produced more than 70 articles, videos and discussion pieces that specifically address hate speech. Contact Timothy Garton Ash.

Index on Censorship is a campaigning and publishing organization based in London that focuses on freedom of expression. The organization regularly reports on hate speech. Contact: Chief Executive Jodie Ginsberg

Susan Benesch is director of the Dangerous Speech Project and a faculty associate of the Berkman Center for Internet and Society at Harvard University. She also teaches human rights at American University’s School of International Service.

Andrea Gittleman is the program manager for the Center for the Prevention of Genocide at the U.S. Holocaust Memorial Museum.