@MontereyJack,
Actually, the - "anti-Jewish" attacks by Christians started in the 4th century in Palestine against Jews and their houses of worship. (The hostile feelings were religiously, not racially, motivated.)
By the 5th century anti-Jewish legislation had been enacted, laws were forbidden to build synagogues and to study the oral la, Jews were said to be Christ‑killers, and anti‑Judaism was the norm in preaching.
In the very same period groups within the Christian church were persecuted for being "Jewish‑Christians".
(Source: Lawrence H. Schiffman: From Text to Tradition, a History of Judaism in Second Temple and Rabbinic Times, Ktav Pub Inc, 1991)
For the later periods, Israel Jacob Yuval's "Two Nations in Your Womb: Perceptions of Jews and Christians in Late Antiquity and the Middle Ages" (Berkeley, University of California Press, 2006) gives some good ideas about the Jewish-Christian schism (additionally a lot more in the other chapters - a standard work for students of Jewish Studies).
