Here are some of his notable works:
Books:
* The Emergency of Evil: The Sociology of Mass Violence (2018)
* Terrorism and the United States: A Reference Handbook (2004)
* The Violent Mind: A Study in the Sociology of Crime (2000)
* The Emergency of Evil: The Sociology of Mass Violence (2018)
* The Mass Murderer: A Sociological Study of Extreme Violence (1987)
Articles and Chapters:
He has published numerous articles and chapters in academic journals and books. Some of his most notable work focuses on:
* The social and psychological factors that contribute to mass violence
* The history and development of terrorism
* The role of criminal justice in responding to violence
* The impact of social media on violence
* The psychology of hate crimes
Specific examples of his work include:
* "The Emergency of Evil: The Sociology of Mass Violence" (2018) which examines the social and psychological factors that contribute to mass violence.
* "Terrorism and the United States: A Reference Handbook" (2004) which provides a comprehensive overview of terrorism in the United States.
* "The Violent Mind: A Study in the Sociology of Crime" (2000) which explores the sociological roots of violence.
To get a more complete picture of his work, you can search for his publications in academic databases like JSTOR, Google Scholar, or WorldCat.