The Rev. Joseph Lowery speaks at the Lincoln Memorial in Washington, D.C., during an event commemorating the 50th anniversary of Dr. Martin Luther King Jr.’s “I Have a Dream” speech and the March on Washington for Jobs and Freedom.

The Rev. Joseph Lowery speaks at the Lincoln Memorial in Washington, D.C., during an event commemorating the 50th anniversary of Dr. Martin Luther King Jr.’s “I Have a Dream” speech and the March on Washington for Jobs and Freedo