(Washington Post) — In the basement of the Martin Luther King Jr. Memorial Library in downtown Washington last month, more than 500 men and women clutched resumes and desperately tried to get off one of the city’s most lingering rolls: the unemployed. “I’ve been out of a job for three years,” said Keith Mayo, a Northeast resident who worked for the U.S. Postal Service. Surrounded by muted light and hopeful – yet realistic – conversations between applicants and potential employers, Mayo estimated that he has applied for 500 jobs. The District native is now banking onMayor-elect Vincent C. Gray to lift him out of his three-year struggle. “I’m hoping he creates more jobs for people like me,” said Mayo, 30, who attended technical college and has work experience.