Power in the Blood, the Dirtier the Better

Tom Riddle grew to dislike Purebloods and decided that he would fight for the Rights of everyone but Purebloods. In a society where being a Pureblood is a disgrace, Creatures attend Hogwarts, and being a Halfblood makes you the top of the hierarchy, how will Harry adjust to this new world he 'accidentally' thrust himself into? How will he accept his 'freakishness?SLASH/abuse/sad.