Brian Martin is Emeritus Professor of Social Sciences at the University of Wollongong, Australia. He has been researching nonviolent action since the late 1970s, with a special interest in strategies for social movements and tactics against injustice. He is the author of 20 books and over 200 articles on nonviolence, dissent, scientific controversies, democracy, education, and other topics. He is vice president of Whistleblowers Australia and hosts a large website on suppression of dissent. His recent books include Official Channels (2020), Social Defence (2019, with Jørgen Johansen), The Deceptive Activist (2017), and Nonviolence Unbound (2015).