Catholicism has been the predominant religion in France for more than a millennium, though it is not as actively practised today as it was. Among the 47,000 religious buildings in France, 94% are Roman Catholic. During the French Revolution, activists conducted a brutal campaign of de-Christianisation, ending the Catholic Church as the state religion. In some cases clergy and churches were attacked, with iconoclasm stripping the churches of statues and ornaments. After alternating between royal and secular republican governments during the 19th century, in 1905 France passed the 1905 law on the Separation of the Churches and the State, which established the principle of ''laïcité''.