I'm on the fence on that. I get the idea....but have issues with the legality. The black guy was a complete jackass...but he had a point. The cops...to their credit...handled it with a lot of patience and calm and you could see that even they thought it was a dumb call.
The black guy accidentally had another point. He screamed "ALL black neighborhoods are high crime areas!!". Yeah....most times.
Here in Los Angeles their are certain streets that are blocked with cement barriers to help stop the drug sales and loitering in black and Hispanic neighborhoods