Judicial review in the broadest sense refers to the power of a court to strike down any legislative or executive action that it finds in violation of a nation's constitution or other law. In its narrowest sense, judicial review refers to a court's power to declare laws unconstitutional. For example, if the United States Congress were to pass a law forbidding criticism of public officials, a court would find that the law violates the right of freedom of speech set forth in the First Amendment of the Constitution. By invalidating (striking down) the law, the court would be exercising the power of judicial review. Constitutional democracies worldwide accept the judicial review process. Most constitutions written since World War II (1939-1945) specifically provide for some form of judicial review.