Human rights are to be respected and protected by States through all appropriate measures, so goes the rhetoric. States must also make solutions available at domestic level to any citizen who claims his/her rights were violated. Individual victims of human rights violation also have the right to seek justice from regional or international institutions. In some countries such violations are committed grossly & systematically that the normal procedures through domestic justice appear to be not enough to address them.
Mostly, such systematic & gross violations of human rights are committed at state level for perceived end causes of, say, crushing opposition, sustaining absolute power and maintaining territorial integrity that involves cross border wars, although less common nowadays. The systematic genocide in Chile during the regime of Augusto Pinochet, in Uganda during the Id Amine regime, in South Africa during the Apartheid regime, and in Ethiopia during the Dergue regime were all orchestrated and executed at state levels.
One of the most significant developments made in the direction of dealing with mass grave human rights violations & fighting impunity was the establishment of the International Criminal Court (ICC) pursuant to the Rome Statute of the International Criminal Court, which was adopted at a conference in Rome, on 17 July 1998. The Statute, entered in to force on 1 July 2002, resulted in the formation of the Court which is based in The Hague, Netherlands. Today a total of 121 countries are states parties to the Rome Statute. Out of them 33 are African states.