50th Anniversary of Martin Luther King, Jr.'s famous speech

Tomorrow the 28th of August marks the 50th anniversary of the March on Washington and Martin Luther King, Jr.'s landmark "I Have a Dream" speech.

This short excerpt is one of the most recognized portions of a speech that is considered one of the most memorable and important in American history:

"I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character."

Is there a Brazilian civil rights activist who has had such an important impact on equal rights for minorities in Brazil as MLK has had in the U.S.?

Here's the full transcript and audio: http://www.americanrhetoric.com/speeche ... adream.htm