I think of it as pragmatism.
When you see a white boy with Maryland tags leaving the stop and cop at Malcom x park in dc you know he's got weed so you bust him.
Likewise the black kid catching the last train in from Bethesda with a car radio in his hand and a screw driver in his back pocket.
Often what looks like a duck is ,in fact, a duck.
Or not.
A long time ago I went to school in Philadelphia for a couple of years. I lived in an apartment off campus in West Philadelphia, which -- once you get off campus -- is (or was then) predominately black. I was dating a woman who lived in Upper Darby, which is the next municipality west of West Philadelphia. I didn't have a car then, so I rode the bus.
One evening I left her apartment too late, and missed the bus. Not being too bright, it took me some time to figure out that the bus wasn't coming. Back then, "Upper Dumpy" was reputed to be a mafioso bedroom community. The cops knew who they were there to protect. I stood at a bus stop for well over an hour, and had multiple police cars cruise past me. Nobody even noticed. But while I was standing there I saw several instances of cops stopping youths "of color" across the street to see who they were and why they were there.
Once I figured out that I had missed the last bus, I started walking. Again, no issues in Upper Dumpy. I don't think I was more than three or four blocks into West Philadelphia when a Philadelphia PD cruiser stopped me, ran my ID, and asked me what I was doing there.
So -- DWB (Driving While Black), WWW (Walking While White) -- it happens.