I suspect these are turf wars since Trumps removed so many gang members that those left are fighting to take over those territories. The do go hot when there’s territory to claim.
This is an unanticipated consequence of tearing down the highrise projects in the 90s. Where once you had organized gangs occupying the towers and dominating their neighborhoods, tearing them down meant scattering the occupants—and gang members—across previously-calm city neighborhoods and the southern suburbs.
Now, a handful of large, reasonably controlled gangs have been replaced by dozens if not hundreds of fragmented “mini-gangs” fighting over turf—even when, a few years prior, they had been part of the same gang “nation”.