There's a study on this, and
@ComputersPutin does have a point about the violence being consistent with a lack of conflict resolution.
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Findings: Data analysis indicates that the hierarchical gang leadership structures that had existed in Chicago for decades have largely, if not entirely, broken down among the city’s African American gangs. Findings suggest that the roots of this structural breakdown are multifaceted, but, most centrally, include intense intergenerational conflict in which participants described rebelling against the selfish and exploitative leadership of older, higher-ranking members and adopting an intense ethos of personal autonomy. Indeed, participants reported that loyalties on the streets were increasingly based upon personal relationships as opposed to membership in a specific street gang.
This paradigm shift has shaped the violence in which gang members are involved, as well, as the findings suggest that current gang wars are generally rooted in parochial animosities as opposed to traditional gang antagonisms or drug-related warfare. Further, although participants reported that nearly all of the violence of gang wars consisted of planned “hits,” they insisted that this violence typically occurred in the absence of specific situational antecedents or approval from fellow gang members."
Abstract: "No Big I's and Little You's": The Structural Breakdown of Chicago's Black Street Gangs (Society for Social Work and Research 19th Annual Conference: The Social and Behavioral Importance of Increased Longevity)