Announcing the day against DRM, the Digital Rights (or also called Restrictions) Management. The campaign is launched by defectivebydesign.org which is part of the Free Software Foundation.
May 4th will be the day.
So if you think it’s unfair that the music you could buy online wont run on your MP3-Player, operating system or that you can only burn it to a CD a couple of times, participate! If you run a website, spread the word, if you use social networks, spread the word, if you actually talk to people in person, spread the word