Introduction to gang reduction responses / Erika Gebo & Brenda J. Bond -- Process matters : mobilizing non-white communities to respond to gangs / Carolyn Boyes-Watson -- Using action research to support strategic thinking and data-driven decision-making in gang and youth violence prevention, intervention, and suppression in Worcester / Laurie Ross & Ellen Foley -- Creating and implementing a gang assessment instrument / Erika Gebo & Kim Tobin -- Street outreach as an intervention modality for at-risk and gang-involved youth / Sean P. Varano & Russell Wolff -- The fundamental challenges of defining and measuring retaliatory gang violence / Brenda J. Bond, Nicole Rivers-Kustanovitz, & Erin Mclaughlin -- Strategic problem analysis to guide comprehensive gang violence reduction strategies / Anthony A. Braga & David M. Hureau -- Impact of the Shannon CSI : challenges and observations from a multisite evaluation / Jack Mcdevitt & Russell Wolff -- Learning from community responses to gangs / Brenda J. Bond & Erika Gebo -- Index -- About the contributors.