Customary international law is based not on written laws but on consistent state practice along with states’ belief that they are acting in accordance with a binding norm. Treaty-based international law and customary international law can exist in parallel and may be in conflict with one another; treaty-based international law will not necessarily override customary international law.
Apartheid
ECCHR is supporting the lawsuit filed by South African victims of the apartheid regime against eight European and US corporations (among them Daimbler and Rheinmetall). The plaintiffs accuse the companies of either directly committing human rights violations in South Africa, or of facilitating and supporting state-sponsored human rights violations.