And then there are the things that don't show up in the reports: how the young people Convery meets can become unrecognizable after just a few weeks on the streets. How the police catalog the drug activity along the west side of the avenue, a market so large it swallows one block after another. "We call it 'The 3100 Block of Everything,' " said Convery. And now, with the growing crowds, there's a matching stretch on the east side — that's The 1800 Block of Everything.