This week on Need to Know Rochester, RCSD School Commissioner, Van White, joins us from Washington, DC. He's got the latest from the 50th anniversary of the March on Washington and shares the connection between the march and his new book. Also on the show, former Monroe County legislator and active member of the civil rights movement, Constance Mitchell, reflects on her experiences from the march 50 years ago. And what can a mayor really do to help tackle city issues? We look into the job of a mayor as we approach the Voice of the Voter Democratic Primary debate on WXXI-TV. Tune in this Thursday at 8:00 p.m. and Sunday at 12:30 p.m. on WXXI-TV Channel 21 and Cable 11 or 1011.