David is a leader in the fields of criminal justice, violence prevention, and youth development. Through NICJR, David serves as a lead consultant and technical assistance provider to the Sierra Health Foundation’s Positive Youth Justice Initiative, supporting probation departments throughout the State of California to transform their juvenile justice practice. David also provides leadership and technical assistance to the Cease Fire Violence Reduction Strategy in the cities of Oakland and Stockton, California. David is also a consultant and technical assistance provider to Cities United, a national initiative to drastically reduce the Black male homicide rates in American cities.