Why Christians Don't Seem to Realize that "Love Thy Neighbor" Didn't Apply to Gentiles?

In proper contest it read, "You shall not take vengeance or bear a grudge against the sons of your own people, but shall love your neighbor as yourself..." That means that it only applied to Jews and not to Gentile neighbors of Jews. The Talmud explains in Baba Kamma 113b157 that the term neighbor specifically does not apply to a Gentile. The Jewish Encyclopedia says it clearly, “Here the Gentile is excepted, as he is not a neighbor…”