The original content of Democracy Now! Headlines appears under the Creative Commons BY-NC-ND 3.0 License (United States). For more, including their other shows and media, visit www.democracynow.org. February 21, 2012 Canada Threatens Complaint Over Tar Sands Labeling --------------------------------------------------- Canada is threatening to file a World Trade Organization complaint against the European Union if the E.U. labels oil from Alberta's tar sands as highly polluting. Canada has threatened to retaliate if the E.U. singled out oil sands crude in what it described as a "discriminatory, arbitrary or unscientific way." .