Human rights — Freedom of expression — Restrictions on freedom of expression — Conditions — Requirement that any restriction be provided by law, address a legitimate aim and be necessary for the achievement of that aim — French legislation prohibiting the denial of certain offences connected with the Holocaust — Whether a violation of International Covenant on Civil and Political Rights, 1966, Article 19

International tribunals — United Nations Human Rights Committee — Competence — Domestic remedies rule — Committee not empowered to question in the abstract the compatibility of national law with the Covenant — Committee confined to investigating the communications submitted to it