The right to property, or the right to own property (cf. ownership) is often classified as a human right for natural persons regarding their possessions. A general recognition of a right to private property is found more rarely and is typically heavily constrained insofar as property is owned by legal persons (i.e. corporations) and where it is used for production rather than consumption. A right to property is recognised in Article 17 of the Universal Declaration of Human Rights, but it is not recognised in the International Covenant on Civil and Political Rights or the International Covenant on Economic, Social and Cultural Rights. The European Convention on Human Rights, in Protocol 1, article 1, acknowledges a right for natural and legal persons to "peaceful enjoyment of his possessions", subject to the "general interest or to secure the payment of taxes." Definition The right to property is one of the most controversial human rights, both in terms of its existence and interpretation. The controversy about the definition of the right meant that it was not included in the International Covenant on Civil and Political Rights or the International Covenant on Economic, Social and Cultural Rights. Controversy centres upon who is deemed to have property rights protected (e.g. human beings or also corporations), the type of property which is protected (property used for the purpose of consumption or production) and the reasons for which property can be restricted (for instance, for regulations, taxation or nationalisation in the public interest). In all human rights instruments, either implicit or express restrictions exist on the extent to which property is protected. Article 17 of the Universal Declaration of Human Rights (UDHR) enshrines the right to property as follows: The object of the right to property as it is usually understood nowadays consists of property already owned or possessed, or of property acquired or to be acquired by a person through lawful means. Not in opposition but in contrast to this, some proposals also defend a universal right to private property, in the sense of a right of every person to effectively receive a certain amount of property, grounded in a claim to Earth's natural resources or other theories of justice. Africa The African Charter on Human and Peoples' Rights (ACHPR) protects the right to property most explicitly in Article 14, stating: Property rights are furthermore recognised in Article 13 of the ACHPR, which states that