Youth exposure to violence increases the risk of poor mental and physical health outcomes lasting into adulthood. Traumatic stress is an outcome of particular concern as the physiological stress response impacts the developing brain. Recently, youth exposure to police violence has been conceptualized as an adverse childhood experience that may impact traumatic stress. To examine this possibility, we conducted a systematic review, drawing upon five databases to gather the existing quantitative and qualitative peer-reviewed research on exposure to police violence and traumatic stress in youth. Searches yielded 27 relevant articles utilizing various study designs: thirteen quantitative, thirteen qualitative, and one mixed method. Twenty-six of the 27 studies found evidence of a relationship between police violence exposure and traumatic stress in youth. Police violence was associated with youth traumatic stress across three types of exposures: direct, vicarious, and anticipated. Studies also explored differential impacts by race and gender. The review revealed current gaps in the literature, such as a lack of data on select sociodemographic groups (e.g., rural youth, LGBTQ+ youth) and potential protective factors (e.g., resilience and school connectedness). In line with the findings, we put forth a research agenda as well as policy and practice recommendations to improve police interactions with youth and mental health services for youth who have been exposed to police violence. Recommendations include improving systematic data collection to track all types of police violence exposure, creating spaces for positive police interactions with youth, and training mental health practitioners to support youth exposed to police violence.
