I think it bears mentioning here, Blackcatter, that you are trotting out a criterion -- a certain sort of class and race egalitarian consciousness -- which is not necessarily part of any bargain the authoress (autrix?) made with herself or others in creating this universe.

I think there is a great deal of implicit tolerance portrayed amongst the young people in the books, and as SRS points out it is as though the tolerance is so normal as to be unnoteworthy.

To keep stretching after the way these books do or do not portray a character cast blended according to your preferred proportions is, it seems to me, straining. I am sure Rowlings never imagined in her wildest hopes that she would become so widely read, and it happened only after she had completely defined the main characters.

As for "muggles" -- well, maybe there was a little intolerance in that regard, but it was earned!! :>))

A