If I understand correctly, Samaritans have the same ethnic roots as Jews. The differences were more religious and ideological than racial. So with that in mind, saying the term "good Samaritan" is specifically racist doesn't really hold water. Xenophobic, maybe. The lines kind of blur when you're talking about groups that are divided by some odd combination of ethnicity, religion, and nationality.
Regardless, if you look at the actual context, the Parable of the Good Samaritan is arguably meant as a message against racism and preconceived notions about people from other ethnic groups or countries.
Regardless, if you look at the actual context, the Parable of the Good Samaritan is arguably meant as a message against racism and preconceived notions about people from other ethnic groups or countries.