http://www.boingboing.net/2006/06/09/antiitunes_drm_demon.html
Basically people are protesting DRM (the encruption that makes it so that if you buy a song from itunes, you can only play it on your iPod, and not share it.
Part of me thinks DRMis what makes the labels comfortable enough to let Apple sell music online, but another part of me cringes at how poorly DRM's are implimented.
Anyway, if you hate DRM's, get your protest clothes on and head out one of the Apple Stores listed in the article.