In my view, the word has evolved to become far more broad than makes sense.

Google says it means "prejudice, discrimination, or antagonism directed against someone of a different race."

The first definition of "race" is "each of the major divisions of humankind, having distinct physical characteristics." This suggests something that could theoretically be detected in the genes. I don't think religion is a good fit; you can find coreligionists in Bulgaria, Nigeria, Indonesia and Japan for more than one religion.

Another definition is "a group of people sharing the same culture, history, language, etc.; an ethnic group." This is more broad but still doesn't seem to encompass the almost universal variety of people who have embraced any of the major world religions, with their many cultures, histories and languages.

Roseanna and Amy do sound prejudiced, but in these statements they are pretty clear about what they are opposed to. If they express similar disdain for other African-American representatives it would be better evidence of race-based prejudice.