I find it all interesting how groups vigourously complain about cultural appropriation ("don't write about my culture") and then make criticisms that the general public is not reading enough about their culture ("why aren't you buying my books").  Some folks seem to want diversity dictated on their own insular terms.  I don't think that's how it happens - there's got to be a "blending" or a "merging" along the way.  If someone creates something that is outside their race or culture it is because they have been inspired to do so and they want to share that - not 'steal' it.