http://en.wikipedia.org/wiki/Pruneyard_Shopping_Center_v._Robins
Pruneyard Shopping Center v. Robins, 447 U.S. 74 (1980), was a U.S. Supreme Court decision issued on June 9, 1980 which arose out of a free speech dispute between the Pruneyard Shopping Center in Campbell,California, and several local high school students (who wished to solicit signatures for a petition against United Nations General Assembly Resolution 3379).[1] In American constitutional law, the Pruneyard is famous for its role in establishing two important rules: