Martin Luther King, I have a Dream, August 28, 1963
This speech is worth watching from time to time to keep things in perspective. So much has changed since, we are yet to see a leader like King emerge again, though all leaders have their own unique point position in history and point of view. This is change I can believe in.
Here is a graet compilation of 50 speeches from Ghandi to King to check out: 50 Famous Speech