Look out for gangs of 4 showing their colors

This is a scene I didn't expect to come across in my nice safe neck of the suburbs.  Yes, gang activity.  I evidently ended up in an area that was already staked out, somebody else's turf.  Their colors were proudly on display.   I could see they were not happy with me being there.  Even without seeing any gang symbols and hand gestures, I knew the best thing to do would be to turn around and leave the way I came.  So I did.