Radio 4 have been celebrating George Orwell recently and I have been reading his Down and out in Paris and London. On page 127 of my edition I notice that in an unusually editorial passage he says
Fear of the mob is a superstitious fear. It is based on the idea that there is some mysterious, fundamental difference between rich and poor, as though they were two different races, like negroes and white men.
Racism is a notoriously difficult word to define but it sounds racist and no doubt had he lived in this era he would have expressed himself differently. See an old discussion here.