In this novel protagonist Harry potter and Hermione Granger are Mud blood. Ron Weasley is a pure blood. Draco Malfoy is also pure blood. Where as evil Voldemort is Mud blood but craving for pure blood. J.K.Rowling subverts the entire narrative by making protagonist who are mud bloods. And important thing is that they are equally or sometimes more powerful in magic than pure blood. So definitely it leads us to think that what should be criteria to judge the people Race/ Blood or merit.This transposing of magical racial beliefs to non-magical racial beliefs is also reflected in the pure-blood mania driving Voldemort and his followers. Voldemort’s followers fully believe that being of pure-blooded ancestry brings with it extra talent, abilities, or worth, even in the face of “consistent evidence against pure-blood superiority” throughout the novels.