No clue where it is, but keep in mind something that large scale practically need every precinct in the city to divert officers to handle.
Would you send a handful of cops out there? Considering many gang members have weapons?
That's totally nuts right there...I've seen one situation similar to that many years ago...two gangs met up at an intersection, and started firing upon each other...a nice massacre on both sides...the news didn't really care since it was gang members...they were waiting to get a story about someone else getting hit, which didn't happen since everyone evacuated that areas once all the gang members started showing up.
I was a few blocks down, trying to get a nice camera shot...never got a clean shot, thanks to the piece of crap camera I had back then (some Konica manual focus, didn't even have changable lenses). I was pretty much a darwin candidate at the time, always putting myself in harm's way to try to get a decent photo of something...I've grown out of that phase though.