“Ironically, then, the very notion of human rights inadvertently opened the door to more virulent forms of sexism, racism, and anti-Semitism. In effect, the sweeping claims about the natural equality of all mankind called forth equally global assertions about natural difference, producing a new kind of opponent to human rights, more powerful and sinister even than the traditionalist ones. The new forms of racism, anti-Semitism, and sexism offered biological explanations for the naturalness of human difference. In the new racism, Jews were not just Christ-killers, their inherent racial inferiority threatened to stain the purity of whites through intermarriage. Blacks were no longer inferior because they were slaves; even as the abolition of slavery progressed around the globe, racism became more, not less, poisonous. Women were not simply less reasonable than men because they were less educated; their biology destined them to the private, domestic life and made them entirely unsuitable for politics, business, or the professions. In these new biological doctrines, education or changes in environment could never change the inherent hierarchical structures in human nature.”