Instead of "racism," how about "prejudice," "bias," or "elitism," or "bigotry?" Human races are already a cultural construct, no point in misusing a term by applying it to something that doesn't even have anything to do with ancestry.
I've edited the word 'race' out --but want to make the point that race is not based on ancestry. Its meaning can shift quite a bit. Recall the English thought German immigrants were an 'inferior race'. But as conceptualized in today's English, white Germans and white English are today considered the same 'race'. In vernacular speech 'racism' is equivalent to bigotry and also intolerance.
In your example, the English had a problem with Germans and people of German descent, that is, their ancestry. Nobody calls San Franciscans, Californians, "coastal people" (vs. Middle Americans), or "city folk" (vs. "country folk"), a race.
Understanding vernacular English is how I knew what you meant, that doesn't mean it's a good idea to poorly use a word that has a more specific meaning when there are plenty of more general words to convey your point.
I also have a problem with prejudice against muslims being called "racist" so using it to refer to San Franciscan localvore attitudes about the rest of the country didn't stand a chance.
