"No one shall be arbitrarily arrested, detained or expelled."

Explanation of Article 9

Every state has the right to arrest, detain or expel people. However, it violates human rights if it does so arbitrarily, i.e. if it does not act in accordance with the law or if these laws themselves are unjust. It is also arbitrary if a state arrests or expels people randomly or indiscriminately without there being sufficient suspicion that they have violated the law.