http://motherboard.tv/2011/8/29/the-copyright-nightmare-of-i-have-a-dream–2
If you weren’t alive to witness Martin Luther King’s “I Have a Dream” speech on the Washington Mall 48 years ago this week, you might try to switch on the old YouTube and dial it up. But you won’t find it there or anywhere else; rights to its usage remain with King and his family.
Update (German)
https://plus.google.com/u/0/117546351384071338747/posts/e6TS31dQqLd