@masayuki bruh that's a question as old as time. Even most racist can't really explain beyond they feel that since they are superior they reserve the right to do whatever they want to inferior beings. Remember at one point Filipino people were kept in Zoos by American and British people. So it's a worse version of that
@masayuki its not racism, its elityzm, they are strong so they think they are superior to anything, be it human or half blood vampire. That's why half blood is disgusting to them, only pure blood, ancestor or holy blood is good from thier pov