Responsibility before the law rests only on the responsible publisher of a newspaper and only on the author of a book, with secondary rules only for such cases as books with an anonymous or an unknown author. It is not possible to take legal action against reporters, sources, distributors or printers because of the content of a book or a newspaper. The Swedish Constitution in this and a number of other ways gives very strong protection for freedom of speech and the free press. Since 1992, the same level of protection is given to electronic media in a parallel Constitutional Law, although there are exceptions that allow regulation of radio and TV as well as censorship of films shown at cinemas.