Propaganda in the United States is spread by both government and media entities. Propaganda is carefully curated information, ideas, or rumors deliberately spread, usually to preserve the self-interest of a nation. It is used in advertising, radio, newspaper, posters, books, television, films and other media. Propagandists may provide either factual or non-factual information to their audiences, often emphasizing positive features and downplaying negative ones, or vice versa, in order to shape wide scale public opinion or influence behavioral changes.