Crooner Tony Bennett will perform in Washington, D.C. on Saturday (24Aug13) to mark the 50th anniversary of Martin Luther King, Jr.'s historical march on the U.S. capital. King, Jr. led thousands of civil rights supporters on a rally through the city in 1963 to call for equal rights for African-Americans and delivered his famed I Have a Dream speech on the steps of the Lincoln Memorial. Bennett will take to the stage at the tribute event to perform in honour of the civil rights icon's humanitarian message, and has called on his fans to do the same. Taking to Twitter.com, he writes, "I'm proud to announce a performance at the Lincoln Memorial in Washington DC this Saturday to honor Dr King's legacy." Bennett joined King and fellow campaigners including singer/actor Harry Belafonte on a march through Alabama in 1965.