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