All this time, Colvin has been driving through the district, watching the crowds gathered on the corners with equal parts attentiveness, weariness, and dread. For the most part, when he slows down, they scatter. But not at one corner: a particularly dopey-looking young man sidles up to the car and proudly says that he's got spider bags. A disbelieving Colvin asks the knucklehead if he wouldn't mind repeating that. "Spider bags, two will get you three," the young man repeats. Colvin turns up his radio -- his police radio. The young man does not get the hint. Finally, Colvin puts on his police hat -- the young man's associates think this is hilarious. Colvin seems to think it's more sad than funny. I'm inclined to agree with both.