Three-time heavyweight boxing champion Muhammad Ali turns 60 this month. He has been the subject of dozens of books, an Academy Award-winning documentary, and a new Hollywood movie. The new hit movie "Ali" stars Will Smith as the fighter in the prime of his boxing career.
On this edition of Dateline, Dave Arlington looks at a man who, in the ring, earned the title of "The Greatest" while, on the world stage, he was speaking out on major issues involving civil rights, religion and war.