Read all about this holiday. When, why, what people do....
What can you tell me about Martin Luther King? (Wikipedia)
Articles to read about the issue:
Five myths about Martin Luther King (The Washington Post)
Watch these two interesting videos to learn about this great man:
And here's his famous speech "I have a dream":
Link to full speech with English subtitles: I HAVE A DREAM and you can also watch the film: Our Friend, Martin