 Arendt argues that the consistent mistreatment of refugees, most of whom were placed in internment camps, is evidence against the existence of human rights.If the notion of human rights as universal and inalienable is to be taken seriously, the rights must be realizable given the features of the modern liberal state.She concluded "The Rights of Man, supposedly inalienable, proved to be unenforceable–even in countries whose constitutions were based upon them–whenever people appeared who were no longer citizens of any sovereign state".