Robert Collins of Baltimore poses for a photo Friday, March 16, 2012, at Cylburn Arboretum in Baltimore. When Collins returned from a leave of absence from his job as a security guard with the Maryland Department of Public Safety and Correctional Services in 2010, he was asked for his Facebook login and password during a reinstatement interview, purportedly so the agency could check for any gang affiliations. (AP Photo/Steve Ruark)

Photo by: Steve Ruark

Robert Collins of Baltimore poses for a photo Friday, March 16, 2012, at Cylburn Arboretum in Baltimore. When Collins returned from a leave of absence from his job as a security guard with the Maryland Department of Public Safety and Correctional Services in 2010, he was asked for his Facebook login and password during a reinstatement interview, purportedly so the agency could check for any gang affiliations. (AP Photo/Steve Ruark)