Clear Channel, a giant radio network that also runs an outdoor advertising company, has been accused of improper censorship by labor union officials for rejecting an anti-Wal-Mart billboard. The union, Local 342 of the United Food and Commercial Workers, is protesting the opening of a Wal-Mart on Staten Island. Clear Channel said that the sign was inappropriate and offensive.
See "Union Cries Foul in Wal-Mart Sign Fight", Steven Greenhouse, The New York Times, April 18, 2005