Well, nothing terribly new about this. The inner cities have been gang-infested war zones for at least 50 years. Although some cities may have gotten worse since the gangs started to elect the mayors.
Its really not just the inner city. There’s a middle class development up the street that has a rampant gang problem.
Heck I’ve seen one of my neighbors kids doing a drug deal. He lives downtown but was visiting mom. A cop lives across the street.