WASHINGTON (AP) — Tens of thousands of people are expected to gather Saturday at the Lincoln Memorial in the nation’s capital to commemorate the 60th anniversary of the Rev. Martin Luther King Jr.’s “I Have A Dream” speech. The March on Washington, convened by the Rev. Al Sharpton’s National Action Network and members of the King family, is meant to be a rededication to the push for civil rights in the face of a backlash. The original march in 1963 drew as many as 250,000 people and helped till the ground for passage of federal civil rights and voting rights legislation in the next few years.