I loved it, absolutely loved it but that's besides the point, we could merely sub a lot of other movies in there. Once Upon A time in America has the lowly Chinese catering to their opium addict, Natural Born Killers has Indians whooping at Mickey and Mallorie on the highway and the medicine man, The Doors has the Indian dying on a road at the beginning that does something to young Morrison. The point is, all those movies and more have this odd peripheral subject to the sides that really have nothing to do with the rest of the movie. In my mind, it parallels the position of the servile races in the psyche of America. Sometimes the Indian makes some sense sometimes the figure whether they are black or mexican make no sense and you have to wonder, "why'd they put that in there?"
In reference to Once Upon a Time In Hollywood, the scene where dicap's character cries, and Pitt says, 'don't cry in front of the Mexicans" which is just bizarre and can be read how a married couple might say, "not in front of the children" either way, it's not flattering and certainly not an equal depiction of the races. In fact, had they said nothing, the mexicans in the picture would be nearly invisible.