Belgian media enjoy strong constitutional protections for a free press. Restrictions on libel, pornography, and the promotion of racial or religious discrimination have only a minor effect on press freedom. In 2002, a court fined two journalists from the newspaper De Morgen for refusing to disclose confidential sources relating to a story on state railway cost overruns. Dual oversight boards seek to maintain balanced reporting on government-controlled radio and television networks. A handful of media corporations control the majority of newspapers.