'I Have a Dream': Why MLK's Speech Has Such Historic Impact
Delivered by Martin Luther King on the steps of the Lincoln Memorial 50 years ago this summer, his call for an end to racism in the United States marks a defining moment in the nation's move towards civil rights. The speech, offered to 250,000 people then, has reached countless millions since, and is hailed as a masterpiece of rhetoric. David Rubenstein illuminates the talk's historic significance.