It's been a little over 40 years, but history has been made.

On April 3, 1968, the day before the last day of his life, Martin Luther King Jr stood before an overwhelming crowd in Memphis, Tennessee, and closed his final speech.

"Well, I don't know what will happen now. We've got some difficult days ahead. But it doesn't matter with me now. Because I've been to the mountaintop. I just want to do God's will. And He's allowed me to go up to the mountain. And I've looked over. And I've seen the promised land. I may not get there with you. But I want you to know tonight, that we, as a people will get to the promised land. And I'm happy, tonight. I'm not worried about anything. I'm not fearing any man."