70 years ago African-American opera singer Marian Anderson sang on the steps of the Lincoln Memorial after the Daughters of the American Revolution barred her from performing at Constitution Hall. The concert packed the National Mall and Ms. Anderson became an overnight civil rights icon. For a look at what her legacy means in the 21st century The Takeaway turns to Patrik Henry Bass. He is the Senior Editor of Essence magazine and the author of Like A Mighty Stream: The March on Washington, August 28, 1963.