Case in point...I nearly got run off the road by a drunk driver tonight. I called 911 and reported it. I saw them a few minutes later at a stoplight, when one of the little miscreants got out of the truck and came across the street at me with a knife (no, I did NOT get out).
I called 911 again. They wanted ME to come down to the station (despite the fact they parked not two blocks away) to "make a report". I told them that I had already given them descriptions of the driver, occupants, and vehicle down to the license plate, and if they wanted to investigate they could do so.
Too bad they're too busy closing up Dunkin Donuts to be bothered with such things.