A Tribune reporting team fanned out across the city over the July Fourth weekend and then conducted follow-up interviews last week to chronicle violence that has become expected over the summer holiday in Chicago. Colleen Mastony wrote this story, based on her own reporting and that of Jeremy Gorner, Annie Sweeney, Lolly Bowean and Peter Nickeas. Also contributing to the project were Rosemary Regina Sobol, Quinn Ford, Alex Chachkevitch, Marwa Eltagouri, Dawn Rhodes, William Lee, Gregory Pratt, Meredith Rodriguez, Genevieve Bookwalter, Tony Briscoe and Sarah Freishtat.