A simple arrest for marijuana possession can show up on criminal databases as “a drug arrest” without specifying the substance or the charge, and without clarifying even whether the person was convicted. These databases are then used by police and prosecutors, as well as by employers and housing officials—an electronic record that will haunt many for life. More than 353,000 people were arrested and jailed by the NYPD between 1997 and 2006 for simple possession of small amounts of marijuana, with blacks five times more likely to be arrested than whites.

