Gang intervention programs are targeted efforts that engage people already involved in gangs to interrupt imminent violence and move them out of it, using street outreach, focused deterrence partnerships, or hospital-based engagement combined with services like trauma care, job training, and housing support. The work is reactive rather than preventive: it reaches the small number of individuals most likely to shoot or be shot, often through credible messengers who share their lived experience, and tries to stop the next shooting before cycling participants into longer-term case management.
Intervention Is Not the Same as Prevention
These two words get used interchangeably, and the confusion matters. Intervention focuses on people already affiliated with gangs and at immediate risk of committing or experiencing violence. The work centers on crisis response, mediating active conflicts, and connecting current gang members to services that address why they stay involved. The measurable goal is fewer shootings, fewer retaliatory incidents, and fewer homicides in the short term.
Prevention aims earlier, at youth who show risk factors like poor academic performance, family instability, or repeated exposure to community violence but haven’t joined a gang. Prevention programs build protective factors through mentoring, after-school programming, and educational support. Both matter. They require different staff, different timelines, and often different funding streams, and conflating the two is one of the most common mistakes grant applicants make.
The Three Main Models
Intervention is delivered through three organizational models, each defining a different relationship between community outreach, law enforcement, and the health care system.
Community Violence Interruption
Often called street outreach, this model employs “credible messengers,” trained violence interrupters who share the lived experience of the people they serve. They are not law enforcement staff. Their authority comes from personal credibility and deep community ties, which lets them mediate disputes and de-escalate potential violence before it happens. The methodology treats violence as a contagious phenomenon: identify the highest-risk conflicts, interrupt transmission, and shift community norms around the acceptability of violence.
Cure Violence Global pioneered this approach and currently operates in more than a dozen U.S. cities including New York, Philadelphia, Milwaukee, and Washington, D.C., along with international sites in Colombia, Mexico, Honduras, and South Africa.1Cure Violence Global. Where We Work Interrupters connect high-risk individuals to case managers who provide longer-term support, but the core function is immediate: stopping the next shooting.
Focused Deterrence
Sometimes called Group Violence Intervention, focused deterrence takes the opposite structural approach by integrating law enforcement, social service providers, and community leaders into a single coordinated strategy. Analysts use violence data to identify the small number of individuals most connected to shootings. Those individuals are then brought together for a “call-in,” where three messages are delivered at once. Law enforcement communicates that continued violence will bring swift and certain legal consequences. Service providers offer a genuine path to employment and support. Community members deliver a moral message about the harm violence causes.
The theory is straightforward. Most serious violence in a city concentrates among a remarkably small number of people. Rather than flooding entire neighborhoods with enforcement, focused deterrence narrows the lens to those specific individuals and gives them an explicit choice.
Hospital-Based Violence Intervention
These programs reach people at a moment of acute vulnerability: immediately after a violent injury. Culturally competent intervention specialists work in emergency departments and trauma centers, engaging survivors at the bedside. The initial contact happens during hospitalization, followed by six to twelve months of intensive community-based case management that includes crisis support, counseling, job training referrals, and housing assistance.2The Health Alliance for Violence Intervention. Hospital-Based Violence Intervention Programs (HVIPs)
The Health Alliance for Violence Intervention coordinates a national network of 89 member programs across the United States and Canada, with dozens more in development.2The Health Alliance for Violence Intervention. Hospital-Based Violence Intervention Programs (HVIPs) The underlying logic is that a traumatic injury opens a window to behavior change that rarely exists at other times. Research from multiple cities has found that participants in hospital-based programs are significantly less likely to be reinjured than people who receive standard discharge care, with some studies showing reinjury rates dropping by 50 percent or more.
What Participants Actually Receive
Regardless of which model delivers them, the services follow a wraparound approach that addresses multiple needs at once. Fixing one problem while ignoring others rarely works. Someone who gets job training but has untreated trauma and no stable housing will likely cycle back into the environment that produced the violence.
Trauma-Informed Care
High rates of post-traumatic stress and chronic exposure to violence are nearly universal among gang-involved individuals, and untreated trauma is one of the strongest predictors of continued violent behavior. Programs provide individual and family therapy, specialized treatment groups, and sometimes in-home services delivered by clinicians with expertise in street violence. This is not generic counseling. Clinicians in this space need to understand how trauma manifests differently when the threat environment is ongoing rather than in the past.
Education and Employment
Educational support helps participants complete secondary education and move into work. Programs assist with earning a high school diploma or equivalency credential, and some guide participants toward post-secondary education or industry certifications. Job readiness training and vocational programs build skills in occupations like construction, information technology, health care, and hospitality.
The Department of Labor’s YouthBuild program is one of the more established federal pipelines for this work. YouthBuild is a community-based pre-apprenticeship program serving young people ages 16 to 24 who left school without a diploma. All grantees must train participants in construction while building or significantly renovating housing for homeless or low-income families.3U.S. Department of Labor. YouthBuild Participants also receive supportive services addressing barriers like transportation, childcare, and work supplies.
The Department of Labor’s Growth Opportunities program focuses more directly on youth affected by community violence. It prepares justice-involved youth and young adults for employment through paid work experiences, mentorship, leadership development, and education, while also contributing to community violence intervention efforts.4U.S. Department of Labor. Growth Opportunities (Re-Entry Youth) Fact Sheet Grantees must partner with a violence prevention organization that has experience in culturally competent outreach to high-risk individuals.
Stabilization Services
The services that stabilize daily life often decide whether a participant stays engaged or drops out. Housing assistance, substance abuse treatment, and legal aid address root causes of instability that violence mediation alone cannot touch. Some programs offer voluntary tattoo removal for visible gang markings, which reduces a significant barrier to employment and signals the participant’s commitment to a different path. Case managers coordinate across services so participants don’t fall through gaps between agencies, and mentors who have navigated similar circumstances reinforce long-term change.
Who Qualifies and How Programs Find People
Intervention programs target the people at highest risk of shooting someone or being shot, not the broad population of “at-risk youth” that prevention programs serve. Eligibility typically includes documented gang affiliation, a threshold number of prior arrests, a history of violent victimization, or some combination of these. Most programs set age parameters, often focusing on youth and young adults. This reflects both the demographics of gun violence and the jurisdictional boundaries of juvenile justice systems, which in most states cover individuals up to age 18.5Office of Juvenile Justice and Delinquency Prevention. Upper and Lower Age of Juvenile Court Delinquency and Status Offense Jurisdiction, 2019 Many programs extend eligibility into the mid-twenties, recognizing that the peak years for serious violence don’t stop at 18.
Selection relies on referrals and data analysis rather than self-enrollment. Referrals come from probation and parole officers, schools, and hospital-based intervention programs that engage survivors immediately after a violent injury. In focused deterrence programs, law enforcement analysts use shooting data to identify the small number of people most connected to violence. Street outreach programs rely more on credible messengers who already know which individuals are most active in conflicts. Either way, these are not open-enrollment programs. They deliberately seek out the hardest-to-reach individuals.
Does This Work?
Evaluations show meaningful but uneven results, and the quality of evidence varies across models.
A 2025 systematic review of the Cure Violence approach found that 68.7 percent of findings across all sites showed reductions in shootings or killings, with 32.5 percent of those reductions reaching statistical significance. Outside of Baltimore, where implementation faced well-documented challenges, 95.8 percent of sites demonstrated reductions, with more than half reaching statistical significance.6SAGE Journals. A Systematic Review on the Effectiveness of the Cure Violence Approach Individual site results ranged widely. Some Chicago neighborhoods saw 40 to 90 percent reductions in killings, while others showed smaller or even negative results.
Focused deterrence has also shown positive results. A systematic review found that in Chicago, gang factions that received the intervention experienced a 23 percent reduction in total shooting involvement and a 32 percent reduction in shooting victimization compared to matched comparison groups.7National Center for Biotechnology Information. Focused Deterrence Strategies Effects on Crime: A Systematic Review Glasgow, Scotland, which adapted the model, saw a 65 percent decline in weapon carrying among the first-year cohort and an 84 percent decline in the second-year cohort.
No single model works everywhere, and implementation quality matters as much as model design. Programs with strong community buy-in, adequate staffing, and sustained funding tend to produce better outcomes than those launched quickly with short-term grants. The worst-performing sites in the literature often share common problems: political interference, staff turnover, or a mismatch between the model’s requirements and the local context.
Where the Money Comes From
Funding comes from a mix of federal grants, state and local appropriations, and private philanthropy. The federal landscape has expanded in recent years, though stability remains a persistent concern.
The Department of Justice is the largest federal funder, through the Bureau of Justice Assistance’s Community Based Violence Intervention and Prevention Initiative. The FY2025 solicitation offers competitive grants of up to $2 million per award to support enforcement, prevention, and intervention strategies that involve sustained community partnerships.8Bureau of Justice Assistance. FY25 Office of Justice Programs Community Based Violence Intervention and Prevention Initiative
The Department of Labor funds intervention-adjacent programs through two main channels: YouthBuild, and the Growth Opportunities program, which has $85 million in available funding targeting justice-involved youth in communities affected by violence.9U.S. Department of Labor. US Department of Labor Awards $46.5M in Grants to Help Young People in Communities Affected by Violence, Poverty Find Opportunities to Succeed The Office of Juvenile Justice and Delinquency Prevention funds gang-specific programming through its anti-gang portfolio and supports services like mentoring, life skills training, and substance abuse counseling for individuals who want to leave gang life.10Office of Juvenile Justice and Delinquency Prevention. Youth Gangs: Models, Services, and Funding
State and municipal governments increasingly allocate dedicated funding, often through public health departments or public safety offices. Private foundations fill gaps that government grants cannot, providing seed money for new programs or operational costs during gaps between grant cycles. Cure Violence’s expansion, for example, relied heavily on philanthropic support before large-scale federal funding became available.
Where These Programs Run Into Trouble
Funding instability is the biggest obstacle. The work requires years of sustained investment to produce lasting results, yet most federal grants run on two- to three-year cycles tied to annual appropriations. When funding lapses, programs lose trained staff who are difficult to replace. A credible messenger’s effectiveness comes from relationships built over years, not from credentials that transfer to a new hire. The historical tendency to spend far more on incarceration than on intervention compounds the problem.
Worker safety is a serious and underappreciated concern. Violence interrupters operate in the same environments where shootings occur, often responding to active conflicts. They face the same risks their participants face, and programs must treat staff trauma, burnout, and physical danger as operational realities rather than afterthoughts.
Confidentiality presents an unresolved legal gap. Unlike attorneys, therapists, or clergy, violence interrupters generally have no recognized legal privilege protecting their communications with participants. Information shared during outreach could theoretically be subpoenaed, creating tension between the trust-based relationship that makes the work effective and the legal system’s interest in that information. Some federal legislative proposals have sought to address this, but as of 2026, no comprehensive federal confidentiality protection exists for community violence intervention workers. Programs funded under the Violence Against Women Act or Victims of Crime Act have specific confidentiality obligations for victim information, but those protections are narrower than what the field needs.
Evaluation remains difficult. Measuring whether a shooting didn’t happen because of an intervention is inherently harder than counting arrests or convictions. The performance metrics required by federal funders, such as jurisdiction population served and number of community members consulted during planning, capture process rather than impact.11Bureau of Justice Assistance. Community-Based Violence Intervention and Prevention Initiative Performance Measures Rigorous quasi-experimental and randomized evaluations are expensive and take years, leaving many programs unable to demonstrate their value on the timelines funders and policymakers demand.