But many quickly return, including The Bronx.
Twenty-four hours a day, vendors call out the names of their wares: "blones" (marijuana joints), "rocks" (cocaine), ecstasy or "wheels" as they call Clonazepam pills, a psychiatric medicine with sedative effects.
Others offer "tusibi" -- calling it "tusi" for short or sometimes "pink cocaine" -- the latest party drug based on Ketamine mixed with substances such as ecstasy and mescaline, a psychedelic derived from a cactus.
Though "banned" from street sale -- considered too harmful even by the gangs -- those who want it can also find heroin, at about $2.5 per gram.