The shootings themselves are off-topic for HN; however articles discussing the tech related to the shootings appears to get flagged: <a href="https://news.ycombinator.com/item?id=20608584" rel="nofollow">https://news.ycombinator.com/item?id=20608584</a>
There are 40 homicides a <i>month</i> in Chicago; they get even less media attention:<p><a href="https://graphics.suntimes.com/homicides/" rel="nofollow">https://graphics.suntimes.com/homicides/</a>
What is there to say? It's kind of off-topic for Hacker News. If you want an article though, here you go: <a href="https://archive.is/NBgoi" rel="nofollow">https://archive.is/NBgoi</a>