On this day 50 years ago (Aug. 28, 1963) a historic moment happened. Martin Luther King Jr. delivered his famous “I Have a Dream” speech in front of the Lincoln Memorial in Washington D.C. His impact on the world will forever be remembered and that includes the doors he helped open for athletes. Thank you MLK. Bo Jackson, Hank Aaron, Sharon Robinson and Robert Griffin III reflect on Martin Luther King Jr.’s importance.