Alfonso is a recognized trainer and consultant in the areas of youth violence, gang sociology and behaviors, gang investigations and prosecutions, parent/teacher awareness issues, prevention and intervention models, and occult/ritual crimes.
He is a consultant to the California and U.S. Departments of Justice, as well as to the U.S. Military, the Bureau of Alcohol, Tobacco, and Firearms, and the U.S. Customs and Border Protection agency.
Alfonso has written and published over 80 articles and 12 books on gang histories, customs and practices, and related issues.
In 2009, Alfonso was named “Professor of the Year” by the University of California, Irvine.