The fundamental nature of fundamental rights is made of three different elements: their role, their content and their effects. In order to be able to protect individuals, fundamental rights themselves need protection of their fundamental nature.
Callewaert, J. (2016). What makes Fundamental Rights Fundamental? In Arnaud Hoc, Stéphanie Wattier et Geoffrey Willmes (ed.), Human Rights as a Basis for Reevaluating and Reconstructing the Law (p. p. 47). Bruylant. https://hdl.handle.net/2078.5/183803