It’s common for commemorations of Martin Luther King Jr. Day to include excerpts from his famous “I Have a Dream” speech. But there’s good reason not to play it in full: The work in its entirety is copyrighted. Click the audio player above to hear the full story. 

Judge rules Warner/Chappell, which licensed the song, doesn't have a copyright.

Some are making money tweeting others' material. That breaks a comedian code.

Issues of inspiration and copyright get even more complicated over decades.

Does copyright law favor the famous?

Where do things stand in the wake of the court's 6-3 verdict?

No, but Apple Records does, to protect the group's copyrights.