The murder of Stephen Pitcairn was just one of hundreds of homicides in Baltimore in 2010, but its impact has been significant. A promising young man was killed in the street, and his story brought home the senselessness of Baltimore¿s violence for many who thought it didn¿t affect them, and it made crime a political issue for the first time in a decade. The sentencing of his killer Friday brings the case to a close. It provides justice for Mr. Pitcairn¿s family and friends and finally puts away for good a man who never should have been on the streets in the first place. But what its lasting impact on the city¿s consciousness and criminal justice system will be, only time will tell.