Rights refer to powers or liberties to which one is justly entitled, those things to which one has a just claim. They tend to be divided into positive rights (which refer to various goods, for example food and water) and negative rights (which refer to basic freedoms, for instance freedom of speech). The notion of rights for children has been a controversial subject but the UN Convention on the Rights of the Child has helped achieve a happy medium between paternalistic and libertarian attitudes by stressing rights to provision, protection and participation.