Gang violence would often be random offender, random victim too. I imagine a motivated murder by a related party is significantly easier to solve than a random shooting where the perpetrator hightails it immediately.
Related parties are easy to name and find, unrelated murderers which you don't find immediately are only going to get harder to catch - where do you even start when with something like that?
A lot of gang violence is at parties and (sadly) funerals. The demographics of the injured bystanders thus tend to reflect the demographics of people who attend those events.
Related parties are easy to name and find, unrelated murderers which you don't find immediately are only going to get harder to catch - where do you even start when with something like that?