I thought it was interesting that Truth mentioned Riverdale, which is indeed a really fucked up neighborhood but which is also so far south that it's barely in the city and therefore doesn't get as much attention as, say, Englewood when this issue is brought up. It's a good example, but an uncommon one.

It seems relevant for this discussion, though, because Riverdale the neighborhood is basically adjacent to Riverdale the city, where this article (https://www.nbcchicago.com/news/national-international/chicago-gun-trace-report-2017/27140/) specifically names a gun shop that has heavily contributed to the total guns recovered by Chicago PD. It says that 60% of those guns come from out of state, and 20% of out of state guns come from Indiana - which you can get to in about fifteen minutes from Riverdale.

The neighborhood works as a nice proxy for the complexity of the issue here - where Chicago's city governance (including law enforcement) could make any number of completely correct decisions about how to manage gun violence and still get absolutely set up by a far more general American unwillingness to divest from the only necessary material ingredient for gun violence: guns.