(1) The exercise of certain rights or freedoms may only be restricted by law, and only if necessary, as the case may be, for: the defence of national security, of public order, health, or morals, of the citizens' rights and freedoms; conducting a criminal investigation; preventing the consequences of a natural calamity, disaster, or an extremely severe catastrophe.
(2) Such restriction shall only be ordered if necessary in a democratic society. The measure shall be proportional to the situation having caused it, applied without discrimination, and without infringing on the existence of such right or freedom. (Art. 53)